3444 lines
110 KiB
Ada
3444 lines
110 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- E R R O U T --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2016, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- Warning: Error messages can be generated during Gigi processing by direct
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-- calls to error message routines, so it is essential that the processing
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-- in this body be consistent with the requirements for the Gigi processing
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-- environment, and that in particular, no disallowed table expansion is
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-- allowed to occur.
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with Atree; use Atree;
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with Casing; use Casing;
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with Csets; use Csets;
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with Debug; use Debug;
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with Einfo; use Einfo;
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with Erroutc; use Erroutc;
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with Fname; use Fname;
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with Gnatvsn; use Gnatvsn;
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with Lib; use Lib;
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with Opt; use Opt;
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with Nlists; use Nlists;
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with Output; use Output;
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with Scans; use Scans;
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with Sem_Aux; use Sem_Aux;
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with Sinput; use Sinput;
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with Sinfo; use Sinfo;
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with Snames; use Snames;
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with Stand; use Stand;
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with Stylesw; use Stylesw;
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with Uname; use Uname;
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package body Errout is
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Errors_Must_Be_Ignored : Boolean := False;
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-- Set to True by procedure Set_Ignore_Errors (True), when calls to error
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-- message procedures should be ignored (when parsing irrelevant text in
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-- sources being preprocessed).
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Finalize_Called : Boolean := False;
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-- Set True if the Finalize routine has been called
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Record_Compilation_Errors : Boolean := False;
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-- Record that a compilation error was witnessed during a given phase of
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-- analysis for gnat2why. This is needed as Warning_Mode is modified twice
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-- in gnat2why, hence Erroutc.Compilation_Errors can only return a suitable
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-- value for each phase of analysis separately. This is updated at each
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-- call to Compilation_Errors.
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Warn_On_Instance : Boolean;
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-- Flag set true for warning message to be posted on instance
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------------------------------------
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-- Table of Non-Instance Messages --
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------------------------------------
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-- This table contains an entry for every error message processed by the
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-- Error_Msg routine that is not posted on generic (or inlined) instance.
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-- As explained in further detail in the Error_Msg procedure body, this
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-- table is used to avoid posting redundant messages on instances.
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type NIM_Record is record
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Msg : String_Ptr;
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Loc : Source_Ptr;
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end record;
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-- Type used to store text and location of one message
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package Non_Instance_Msgs is new Table.Table (
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Table_Component_Type => NIM_Record,
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Table_Index_Type => Int,
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Table_Low_Bound => 1,
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Table_Initial => 100,
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Table_Increment => 100,
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Table_Name => "Non_Instance_Msgs");
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-----------------------
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-- Local Subprograms --
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-----------------------
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procedure Error_Msg_Internal
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(Msg : String;
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Sptr : Source_Ptr;
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Optr : Source_Ptr;
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Msg_Cont : Boolean);
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-- This is the low level routine used to post messages after dealing with
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-- the issue of messages placed on instantiations (which get broken up
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-- into separate calls in Error_Msg). Sptr is the location on which the
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-- flag will be placed in the output. In the case where the flag is on
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-- the template, this points directly to the template, not to one of the
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-- instantiation copies of the template. Optr is the original location
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-- used to flag the error, and this may indeed point to an instantiation
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-- copy. So typically we can see Optr pointing to the template location
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-- in an instantiation copy when Sptr points to the source location of
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-- the actual instantiation (i.e the line with the new). Msg_Cont is
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-- set true if this is a continuation message.
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function No_Warnings (N : Node_Or_Entity_Id) return Boolean;
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-- Determines if warnings should be suppressed for the given node
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function OK_Node (N : Node_Id) return Boolean;
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-- Determines if a node is an OK node to place an error message on (return
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-- True) or if the error message should be suppressed (return False). A
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-- message is suppressed if the node already has an error posted on it,
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-- or if it refers to an Etype that has an error posted on it, or if
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-- it references an Entity that has an error posted on it.
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procedure Output_Source_Line
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(L : Physical_Line_Number;
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Sfile : Source_File_Index;
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Errs : Boolean);
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-- Outputs text of source line L, in file S, together with preceding line
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-- number, as described above for Output_Line_Number. The Errs parameter
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-- indicates if there are errors attached to the line, which forces
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-- listing on, even in the presence of pragma List (Off).
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procedure Set_Msg_Insertion_Column;
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-- Handle column number insertion (@ insertion character)
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procedure Set_Msg_Insertion_Node;
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-- Handle node (name from node) insertion (& insertion character)
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procedure Set_Msg_Insertion_Type_Reference (Flag : Source_Ptr);
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-- Handle type reference (right brace insertion character). Flag is the
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-- location of the flag, which is provided for the internal call to
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-- Set_Msg_Insertion_Line_Number,
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procedure Set_Msg_Insertion_Unit_Name (Suffix : Boolean := True);
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-- Handle unit name insertion ($ insertion character). Depending on Boolean
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-- parameter Suffix, (spec) or (body) is appended after the unit name.
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procedure Set_Msg_Node (Node : Node_Id);
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-- Add the sequence of characters for the name associated with the given
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-- node to the current message. For N_Designator, N_Selected_Component,
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-- N_Defining_Program_Unit_Name, and N_Expanded_Name, the Prefix is
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-- included as well.
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procedure Set_Msg_Text (Text : String; Flag : Source_Ptr);
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-- Add a sequence of characters to the current message. The characters may
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-- be one of the special insertion characters (see documentation in spec).
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-- Flag is the location at which the error is to be posted, which is used
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-- to determine whether or not the # insertion needs a file name. The
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-- variables Msg_Buffer are set on return Msglen.
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procedure Set_Posted (N : Node_Id);
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-- Sets the Error_Posted flag on the given node, and all its parents that
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-- are subexpressions and then on the parent non-subexpression construct
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-- that contains the original expression. If that parent is a named
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-- association, the flag is further propagated to its parent. This is done
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-- in order to guard against cascaded errors. Note that this call has an
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-- effect for a serious error only.
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procedure Set_Qualification (N : Nat; E : Entity_Id);
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-- Outputs up to N levels of qualification for the given entity. For
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-- example, the entity A.B.C.D will output B.C. if N = 2.
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function Special_Msg_Delete
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(Msg : String;
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N : Node_Or_Entity_Id;
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E : Node_Or_Entity_Id) return Boolean;
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-- This function is called from Error_Msg_NEL, passing the message Msg,
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-- node N on which the error is to be posted, and the entity or node E
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-- to be used for an & insertion in the message if any. The job of this
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-- procedure is to test for certain cascaded messages that we would like
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-- to suppress. If the message is to be suppressed then we return True.
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-- If the message should be generated (the normal case) False is returned.
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procedure Unwind_Internal_Type (Ent : in out Entity_Id);
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-- This procedure is given an entity id for an internal type, i.e. a type
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-- with an internal name. It unwinds the type to try to get to something
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-- reasonably printable, generating prefixes like "subtype of", "access
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-- to", etc along the way in the buffer. The value in Ent on return is the
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-- final name to be printed. Hopefully this is not an internal name, but in
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-- some internal name cases, it is an internal name, and has to be printed
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-- anyway (although in this case the message has been killed if possible).
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-- The global variable Class_Flag is set to True if the resulting entity
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-- should have 'Class appended to its name (see Add_Class procedure), and
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-- is otherwise unchanged.
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function Warn_Insertion return String;
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-- This is called for warning messages only (so Warning_Msg_Char is set)
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-- and returns a corresponding string to use at the beginning of generated
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-- auxiliary messages, such as "in instantiation at ...".
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-- 'a' .. 'z' returns "?x?"
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-- 'A' .. 'Z' returns "?X?"
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-- '*' returns "?*?"
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-- '$' returns "?$?info: "
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-- ' ' returns " "
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-- No other settings are valid
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-----------------------
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-- Change_Error_Text --
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-----------------------
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procedure Change_Error_Text (Error_Id : Error_Msg_Id; New_Msg : String) is
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Save_Next : Error_Msg_Id;
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Err_Id : Error_Msg_Id := Error_Id;
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begin
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Set_Msg_Text (New_Msg, Errors.Table (Error_Id).Sptr);
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Errors.Table (Error_Id).Text := new String'(Msg_Buffer (1 .. Msglen));
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-- If in immediate error message mode, output modified error message now
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-- This is just a bit tricky, because we want to output just a single
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-- message, and the messages we modified is already linked in. We solve
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-- this by temporarily resetting its forward pointer to empty.
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if Debug_Flag_OO then
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Save_Next := Errors.Table (Error_Id).Next;
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Errors.Table (Error_Id).Next := No_Error_Msg;
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Write_Eol;
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Output_Source_Line
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(Errors.Table (Error_Id).Line, Errors.Table (Error_Id).Sfile, True);
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Output_Error_Msgs (Err_Id);
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Errors.Table (Error_Id).Next := Save_Next;
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end if;
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end Change_Error_Text;
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------------------------
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-- Compilation_Errors --
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------------------------
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function Compilation_Errors return Boolean is
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begin
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if not Finalize_Called then
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raise Program_Error;
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-- Record that a compilation error was witnessed during a given phase of
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-- analysis for gnat2why. This is needed as Warning_Mode is modified
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-- twice in gnat2why, hence Erroutc.Compilation_Errors can only return a
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-- suitable value for each phase of analysis separately.
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else
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Record_Compilation_Errors :=
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Record_Compilation_Errors or else Erroutc.Compilation_Errors;
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return Record_Compilation_Errors;
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end if;
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end Compilation_Errors;
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--------------------------------------
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-- Delete_Warning_And_Continuations --
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--------------------------------------
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procedure Delete_Warning_And_Continuations (Msg : Error_Msg_Id) is
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Id : Error_Msg_Id;
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begin
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pragma Assert (not Errors.Table (Msg).Msg_Cont);
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Id := Msg;
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loop
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declare
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M : Error_Msg_Object renames Errors.Table (Id);
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begin
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if not M.Deleted then
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M.Deleted := True;
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Warnings_Detected := Warnings_Detected - 1;
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if M.Info then
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Info_Messages := Info_Messages - 1;
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end if;
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if M.Warn_Err then
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Warnings_Treated_As_Errors := Warnings_Treated_As_Errors - 1;
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end if;
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end if;
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Id := M.Next;
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exit when Id = No_Error_Msg;
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exit when not Errors.Table (Id).Msg_Cont;
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end;
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end loop;
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end Delete_Warning_And_Continuations;
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---------------
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-- Error_Msg --
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---------------
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-- Error_Msg posts a flag at the given location, except that if the
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-- Flag_Location points within a generic template and corresponds to an
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-- instantiation of this generic template, then the actual message will be
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-- posted on the generic instantiation, along with additional messages
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-- referencing the generic declaration.
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procedure Error_Msg (Msg : String; Flag_Location : Source_Ptr) is
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Sindex : Source_File_Index;
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-- Source index for flag location
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Orig_Loc : Source_Ptr;
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-- Original location of Flag_Location (i.e. location in original
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-- template in instantiation case, otherwise unchanged).
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begin
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-- It is a fatal error to issue an error message when scanning from the
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-- internal source buffer (see Sinput for further documentation)
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pragma Assert (Sinput.Source /= Internal_Source_Ptr);
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-- Return if all errors are to be ignored
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if Errors_Must_Be_Ignored then
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return;
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end if;
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-- If we already have messages, and we are trying to place a message at
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-- No_Location, then just ignore the attempt since we assume that what
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-- is happening is some cascaded junk. Note that this is safe in the
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-- sense that proceeding will surely bomb. We will also bomb if the flag
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-- location is No_Location and we don't have any messages so far, but
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-- that is a real bug and a legitimate bomb, so we go ahead.
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if Flag_Location = No_Location
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and then Total_Errors_Detected > 0
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then
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return;
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end if;
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-- Start of processing for new message
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Sindex := Get_Source_File_Index (Flag_Location);
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Prescan_Message (Msg);
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Orig_Loc := Original_Location (Flag_Location);
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-- If the current location is in an instantiation, the issue arises of
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-- whether to post the message on the template or the instantiation.
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-- The way we decide is to see if we have posted the same message on
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-- the template when we compiled the template (the template is always
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-- compiled before any instantiations). For this purpose, we use a
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-- separate table of messages. The reason we do this is twofold:
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-- First, the messages can get changed by various processing
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-- including the insertion of tokens etc, making it hard to
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-- do the comparison.
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-- Second, we will suppress a warning on a template if it is not in
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-- the current extended source unit. That's reasonable and means we
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-- don't want the warning on the instantiation here either, but it
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-- does mean that the main error table would not in any case include
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-- the message.
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if Flag_Location = Orig_Loc then
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Non_Instance_Msgs.Append ((new String'(Msg), Flag_Location));
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Warn_On_Instance := False;
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-- Here we have an instance message
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else
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-- Delete if debug flag off, and this message duplicates a message
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-- already posted on the corresponding template
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if not Debug_Flag_GG then
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for J in Non_Instance_Msgs.First .. Non_Instance_Msgs.Last loop
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if Msg = Non_Instance_Msgs.Table (J).Msg.all
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and then Non_Instance_Msgs.Table (J).Loc = Orig_Loc
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then
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return;
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end if;
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end loop;
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end if;
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-- No duplicate, so error/warning will be posted on instance
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Warn_On_Instance := Is_Warning_Msg;
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end if;
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-- Ignore warning message that is suppressed for this location. Note
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-- that style checks are not considered warning messages for this
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-- purpose.
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if Is_Warning_Msg and then Warnings_Suppressed (Orig_Loc) /= No_String
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then
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return;
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-- For style messages, check too many messages so far
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elsif Is_Style_Msg
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and then Maximum_Messages /= 0
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and then Warnings_Detected >= Maximum_Messages
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then
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return;
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end if;
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-- The idea at this stage is that we have two kinds of messages
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-- First, we have those messages that are to be placed as requested at
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-- Flag_Location. This includes messages that have nothing to do with
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-- generics, and also messages placed on generic templates that reflect
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-- an error in the template itself. For such messages we simply call
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-- Error_Msg_Internal to place the message in the requested location.
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if Instantiation (Sindex) = No_Location then
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Error_Msg_Internal (Msg, Flag_Location, Flag_Location, False);
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return;
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end if;
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-- If we are trying to flag an error in an instantiation, we may have
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-- a generic contract violation. What we generate in this case is:
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-- instantiation error at ...
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-- original error message
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-- or
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-- warning: in instantiation at
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-- warning: original warning message
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-- All these messages are posted at the location of the top level
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-- instantiation. If there are nested instantiations, then the
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-- instantiation error message can be repeated, pointing to each
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-- of the relevant instantiations.
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-- Note: the instantiation mechanism is also shared for inlining of
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-- subprogram bodies when front end inlining is done. In this case the
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-- messages have the form:
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-- in inlined body at ...
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-- original error message
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-- or
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-- warning: in inlined body at
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-- warning: original warning message
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-- OK, here we have an instantiation error, and we need to generate the
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-- error on the instantiation, rather than on the template.
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declare
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Actual_Error_Loc : Source_Ptr;
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-- Location of outer level instantiation in instantiation case, or
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-- just a copy of Flag_Location in the normal case. This is the
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-- location where all error messages will actually be posted.
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Save_Error_Msg_Sloc : constant Source_Ptr := Error_Msg_Sloc;
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-- Save possible location set for caller's message. We need to use
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-- Error_Msg_Sloc for the location of the instantiation error but we
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-- have to preserve a possible original value.
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X : Source_File_Index;
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Msg_Cont_Status : Boolean;
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-- Used to label continuation lines in instantiation case with
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-- proper Msg_Cont status.
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begin
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-- Loop to find highest level instantiation, where all error
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-- messages will be placed.
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X := Sindex;
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loop
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Actual_Error_Loc := Instantiation (X);
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X := Get_Source_File_Index (Actual_Error_Loc);
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exit when Instantiation (X) = No_Location;
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end loop;
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-- Since we are generating the messages at the instantiation point in
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-- any case, we do not want the references to the bad lines in the
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-- instance to be annotated with the location of the instantiation.
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Suppress_Instance_Location := True;
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Msg_Cont_Status := False;
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-- Loop to generate instantiation messages
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Error_Msg_Sloc := Flag_Location;
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X := Get_Source_File_Index (Flag_Location);
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while Instantiation (X) /= No_Location loop
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-- Suppress instantiation message on continuation lines
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if Msg (Msg'First) /= '\' then
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-- Case of inlined body
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if Inlined_Body (X) then
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if Is_Warning_Msg or Is_Style_Msg then
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Error_Msg_Internal
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(Warn_Insertion & "in inlined body #",
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Actual_Error_Loc, Flag_Location, Msg_Cont_Status);
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else
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Error_Msg_Internal
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("error in inlined body #",
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Actual_Error_Loc, Flag_Location, Msg_Cont_Status);
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end if;
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-- Case of generic instantiation
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|
|
else
|
|
if Is_Warning_Msg or else Is_Style_Msg then
|
|
Error_Msg_Internal
|
|
(Warn_Insertion & "in instantiation #",
|
|
Actual_Error_Loc, Flag_Location, Msg_Cont_Status);
|
|
else
|
|
Error_Msg_Internal
|
|
("instantiation error #",
|
|
Actual_Error_Loc, Flag_Location, Msg_Cont_Status);
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
Error_Msg_Sloc := Instantiation (X);
|
|
X := Get_Source_File_Index (Error_Msg_Sloc);
|
|
Msg_Cont_Status := True;
|
|
end loop;
|
|
|
|
Suppress_Instance_Location := False;
|
|
Error_Msg_Sloc := Save_Error_Msg_Sloc;
|
|
|
|
-- Here we output the original message on the outer instantiation
|
|
|
|
Error_Msg_Internal
|
|
(Msg, Actual_Error_Loc, Flag_Location, Msg_Cont_Status);
|
|
end;
|
|
end Error_Msg;
|
|
|
|
--------------------------------
|
|
-- Error_Msg_Ada_2012_Feature --
|
|
--------------------------------
|
|
|
|
procedure Error_Msg_Ada_2012_Feature (Feature : String; Loc : Source_Ptr) is
|
|
begin
|
|
if Ada_Version < Ada_2012 then
|
|
Error_Msg (Feature & " is an Ada 2012 feature", Loc);
|
|
|
|
if No (Ada_Version_Pragma) then
|
|
Error_Msg ("\unit must be compiled with -gnat2012 switch", Loc);
|
|
else
|
|
Error_Msg_Sloc := Sloc (Ada_Version_Pragma);
|
|
Error_Msg ("\incompatible with Ada version set#", Loc);
|
|
end if;
|
|
end if;
|
|
end Error_Msg_Ada_2012_Feature;
|
|
|
|
------------------
|
|
-- Error_Msg_AP --
|
|
------------------
|
|
|
|
procedure Error_Msg_AP (Msg : String) is
|
|
S1 : Source_Ptr;
|
|
C : Character;
|
|
|
|
begin
|
|
-- If we had saved the Scan_Ptr value after scanning the previous
|
|
-- token, then we would have exactly the right place for putting
|
|
-- the flag immediately at hand. However, that would add at least
|
|
-- two instructions to a Scan call *just* to service the possibility
|
|
-- of an Error_Msg_AP call. So instead we reconstruct that value.
|
|
|
|
-- We have two possibilities, start with Prev_Token_Ptr and skip over
|
|
-- the current token, which is made harder by the possibility that this
|
|
-- token may be in error, or start with Token_Ptr and work backwards.
|
|
-- We used to take the second approach, but it's hard because of
|
|
-- comments, and harder still because things that look like comments
|
|
-- can appear inside strings. So now we take the first approach.
|
|
|
|
-- Note: in the case where there is no previous token, Prev_Token_Ptr
|
|
-- is set to Source_First, which is a reasonable position for the
|
|
-- error flag in this situation.
|
|
|
|
S1 := Prev_Token_Ptr;
|
|
C := Source (S1);
|
|
|
|
-- If the previous token is a string literal, we need a special approach
|
|
-- since there may be white space inside the literal and we don't want
|
|
-- to stop on that white space.
|
|
|
|
-- Note: since this is an error recovery issue anyway, it is not worth
|
|
-- worrying about special UTF_32 line terminator characters here.
|
|
|
|
if Prev_Token = Tok_String_Literal then
|
|
loop
|
|
S1 := S1 + 1;
|
|
|
|
if Source (S1) = C then
|
|
S1 := S1 + 1;
|
|
exit when Source (S1) /= C;
|
|
elsif Source (S1) in Line_Terminator then
|
|
exit;
|
|
end if;
|
|
end loop;
|
|
|
|
-- Character literal also needs special handling
|
|
|
|
elsif Prev_Token = Tok_Char_Literal then
|
|
S1 := S1 + 3;
|
|
|
|
-- Otherwise we search forward for the end of the current token, marked
|
|
-- by a line terminator, white space, a comment symbol or if we bump
|
|
-- into the following token (i.e. the current token).
|
|
|
|
-- Again, it is not worth worrying about UTF_32 special line terminator
|
|
-- characters in this context, since this is only for error recovery.
|
|
|
|
else
|
|
while Source (S1) not in Line_Terminator
|
|
and then Source (S1) /= ' '
|
|
and then Source (S1) /= ASCII.HT
|
|
and then (Source (S1) /= '-' or else Source (S1 + 1) /= '-')
|
|
and then S1 /= Token_Ptr
|
|
loop
|
|
S1 := S1 + 1;
|
|
end loop;
|
|
end if;
|
|
|
|
-- S1 is now set to the location for the flag
|
|
|
|
Error_Msg (Msg, S1);
|
|
end Error_Msg_AP;
|
|
|
|
------------------
|
|
-- Error_Msg_BC --
|
|
------------------
|
|
|
|
procedure Error_Msg_BC (Msg : String) is
|
|
begin
|
|
-- If we are at end of file, post the flag after the previous token
|
|
|
|
if Token = Tok_EOF then
|
|
Error_Msg_AP (Msg);
|
|
|
|
-- If we are at start of file, post the flag at the current token
|
|
|
|
elsif Token_Ptr = Source_First (Current_Source_File) then
|
|
Error_Msg_SC (Msg);
|
|
|
|
-- If the character before the current token is a space or a horizontal
|
|
-- tab, then we place the flag on this character (in the case of a tab
|
|
-- we would really like to place it in the "last" character of the tab
|
|
-- space, but that it too much trouble to worry about).
|
|
|
|
elsif Source (Token_Ptr - 1) = ' '
|
|
or else Source (Token_Ptr - 1) = ASCII.HT
|
|
then
|
|
Error_Msg (Msg, Token_Ptr - 1);
|
|
|
|
-- If there is no space or tab before the current token, then there is
|
|
-- no room to place the flag before the token, so we place it on the
|
|
-- token instead (this happens for example at the start of a line).
|
|
|
|
else
|
|
Error_Msg (Msg, Token_Ptr);
|
|
end if;
|
|
end Error_Msg_BC;
|
|
|
|
-------------------
|
|
-- Error_Msg_CRT --
|
|
-------------------
|
|
|
|
procedure Error_Msg_CRT (Feature : String; N : Node_Id) is
|
|
CNRT : constant String := " not allowed in no run time mode";
|
|
CCRT : constant String := " not supported by configuration>";
|
|
|
|
S : String (1 .. Feature'Length + 1 + CCRT'Length);
|
|
L : Natural;
|
|
|
|
begin
|
|
S (1) := '|';
|
|
S (2 .. Feature'Length + 1) := Feature;
|
|
L := Feature'Length + 2;
|
|
|
|
if No_Run_Time_Mode then
|
|
S (L .. L + CNRT'Length - 1) := CNRT;
|
|
L := L + CNRT'Length - 1;
|
|
|
|
else pragma Assert (Configurable_Run_Time_Mode);
|
|
S (L .. L + CCRT'Length - 1) := CCRT;
|
|
L := L + CCRT'Length - 1;
|
|
end if;
|
|
|
|
Error_Msg_N (S (1 .. L), N);
|
|
Configurable_Run_Time_Violations := Configurable_Run_Time_Violations + 1;
|
|
end Error_Msg_CRT;
|
|
|
|
------------------
|
|
-- Error_Msg_PT --
|
|
------------------
|
|
|
|
procedure Error_Msg_PT (E : Entity_Id; Iface_Prim : Entity_Id) is
|
|
begin
|
|
Error_Msg_N
|
|
("illegal overriding of subprogram inherited from interface", E);
|
|
|
|
Error_Msg_Sloc := Sloc (Iface_Prim);
|
|
|
|
if Ekind (E) = E_Function then
|
|
Error_Msg_N
|
|
("\first formal of & declared # must be of mode `IN` "
|
|
& "or access-to-constant", E);
|
|
else
|
|
Error_Msg_N
|
|
("\first formal of & declared # must be of mode `OUT`, `IN OUT` "
|
|
& "or access-to-variable", E);
|
|
end if;
|
|
end Error_Msg_PT;
|
|
|
|
-----------------
|
|
-- Error_Msg_F --
|
|
-----------------
|
|
|
|
procedure Error_Msg_F (Msg : String; N : Node_Id) is
|
|
begin
|
|
Error_Msg_NEL (Msg, N, N, Sloc (First_Node (N)));
|
|
end Error_Msg_F;
|
|
|
|
------------------
|
|
-- Error_Msg_FE --
|
|
------------------
|
|
|
|
procedure Error_Msg_FE
|
|
(Msg : String;
|
|
N : Node_Id;
|
|
E : Node_Or_Entity_Id)
|
|
is
|
|
begin
|
|
Error_Msg_NEL (Msg, N, E, Sloc (First_Node (N)));
|
|
end Error_Msg_FE;
|
|
|
|
------------------------
|
|
-- Error_Msg_Internal --
|
|
------------------------
|
|
|
|
procedure Error_Msg_Internal
|
|
(Msg : String;
|
|
Sptr : Source_Ptr;
|
|
Optr : Source_Ptr;
|
|
Msg_Cont : Boolean)
|
|
is
|
|
Next_Msg : Error_Msg_Id;
|
|
-- Pointer to next message at insertion point
|
|
|
|
Prev_Msg : Error_Msg_Id;
|
|
-- Pointer to previous message at insertion point
|
|
|
|
Temp_Msg : Error_Msg_Id;
|
|
|
|
Warn_Err : Boolean;
|
|
-- Set if warning to be treated as error
|
|
|
|
procedure Handle_Serious_Error;
|
|
-- Internal procedure to do all error message handling for a serious
|
|
-- error message, other than bumping the error counts and arranging
|
|
-- for the message to be output.
|
|
|
|
--------------------------
|
|
-- Handle_Serious_Error --
|
|
--------------------------
|
|
|
|
procedure Handle_Serious_Error is
|
|
begin
|
|
-- Turn off code generation if not done already
|
|
|
|
if Operating_Mode = Generate_Code then
|
|
Operating_Mode := Check_Semantics;
|
|
Expander_Active := False;
|
|
end if;
|
|
|
|
-- Set the fatal error flag in the unit table unless we are in
|
|
-- Try_Semantics mode (in which case we set ignored mode if not
|
|
-- currently set. This stops the semantics from being performed
|
|
-- if we find a serious error. This is skipped if we are currently
|
|
-- dealing with the configuration pragma file.
|
|
|
|
if Current_Source_Unit /= No_Unit then
|
|
declare
|
|
U : constant Unit_Number_Type := Get_Source_Unit (Sptr);
|
|
begin
|
|
if Try_Semantics then
|
|
if Fatal_Error (U) = None then
|
|
Set_Fatal_Error (U, Error_Ignored);
|
|
end if;
|
|
else
|
|
Set_Fatal_Error (U, Error_Detected);
|
|
end if;
|
|
end;
|
|
end if;
|
|
end Handle_Serious_Error;
|
|
|
|
-- Start of processing for Error_Msg_Internal
|
|
|
|
begin
|
|
if Raise_Exception_On_Error /= 0 then
|
|
raise Error_Msg_Exception;
|
|
end if;
|
|
|
|
Continuation := Msg_Cont;
|
|
Continuation_New_Line := False;
|
|
Suppress_Message := False;
|
|
Kill_Message := False;
|
|
Set_Msg_Text (Msg, Sptr);
|
|
|
|
-- Kill continuation if parent message killed
|
|
|
|
if Continuation and Last_Killed then
|
|
return;
|
|
end if;
|
|
|
|
-- Return without doing anything if message is suppressed
|
|
|
|
if Suppress_Message
|
|
and then not All_Errors_Mode
|
|
and then not Is_Warning_Msg
|
|
and then not Is_Unconditional_Msg
|
|
then
|
|
if not Continuation then
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Return without doing anything if message is killed and this is not
|
|
-- the first error message. The philosophy is that if we get a weird
|
|
-- error message and we already have had a message, then we hope the
|
|
-- weird message is a junk cascaded message
|
|
|
|
if Kill_Message
|
|
and then not All_Errors_Mode
|
|
and then Total_Errors_Detected /= 0
|
|
then
|
|
if not Continuation then
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Special check for warning message to see if it should be output
|
|
|
|
if Is_Warning_Msg then
|
|
|
|
-- Immediate return if warning message and warnings are suppressed
|
|
|
|
if Warnings_Suppressed (Optr) /= No_String
|
|
or else
|
|
Warnings_Suppressed (Sptr) /= No_String
|
|
then
|
|
Cur_Msg := No_Error_Msg;
|
|
return;
|
|
end if;
|
|
|
|
-- If the flag location is in the main extended source unit then for
|
|
-- sure we want the warning since it definitely belongs
|
|
|
|
if In_Extended_Main_Source_Unit (Sptr) then
|
|
null;
|
|
|
|
-- If the main unit has not been read yet. the warning must be on
|
|
-- a configuration file: gnat.adc or user-defined. This means we
|
|
-- are not parsing the main unit yet, so skip following checks.
|
|
|
|
elsif No (Cunit (Main_Unit)) then
|
|
null;
|
|
|
|
-- If the flag location is not in the main extended source unit, then
|
|
-- we want to eliminate the warning, unless it is in the extended
|
|
-- main code unit and we want warnings on the instance.
|
|
|
|
elsif In_Extended_Main_Code_Unit (Sptr) and then Warn_On_Instance then
|
|
null;
|
|
|
|
-- Keep warning if debug flag G set
|
|
|
|
elsif Debug_Flag_GG then
|
|
null;
|
|
|
|
-- Keep warning if message text contains !!
|
|
|
|
elsif Has_Double_Exclam then
|
|
null;
|
|
|
|
-- Here is where we delete a warning from a with'ed unit
|
|
|
|
else
|
|
Cur_Msg := No_Error_Msg;
|
|
|
|
if not Continuation then
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
end if;
|
|
|
|
-- If message is to be ignored in special ignore message mode, this is
|
|
-- where we do this special processing, bypassing message output.
|
|
|
|
if Ignore_Errors_Enable > 0 then
|
|
if Is_Serious_Error then
|
|
Handle_Serious_Error;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- If error message line length set, and this is a continuation message
|
|
-- then all we do is to append the text to the text of the last message
|
|
-- with a comma space separator (eliminating a possible (style) or
|
|
-- info prefix).
|
|
|
|
if Error_Msg_Line_Length /= 0 and then Continuation then
|
|
Cur_Msg := Errors.Last;
|
|
|
|
declare
|
|
Oldm : String_Ptr := Errors.Table (Cur_Msg).Text;
|
|
Newm : String (1 .. Oldm'Last + 2 + Msglen);
|
|
Newl : Natural;
|
|
M : Natural;
|
|
|
|
begin
|
|
-- First copy old message to new one and free it
|
|
|
|
Newm (Oldm'Range) := Oldm.all;
|
|
Newl := Oldm'Length;
|
|
Free (Oldm);
|
|
|
|
-- Remove (style) or info: at start of message
|
|
|
|
if Msglen > 8 and then Msg_Buffer (1 .. 8) = "(style) " then
|
|
M := 9;
|
|
|
|
elsif Msglen > 6 and then Msg_Buffer (1 .. 6) = "info: " then
|
|
M := 7;
|
|
|
|
else
|
|
M := 1;
|
|
end if;
|
|
|
|
-- Now deal with separation between messages. Normally this is
|
|
-- simply comma space, but there are some special cases.
|
|
|
|
-- If continuation new line, then put actual NL character in msg
|
|
|
|
if Continuation_New_Line then
|
|
Newl := Newl + 1;
|
|
Newm (Newl) := ASCII.LF;
|
|
|
|
-- If continuation message is enclosed in parentheses, then
|
|
-- special treatment (don't need a comma, and we want to combine
|
|
-- successive parenthetical remarks into a single one with
|
|
-- separating commas).
|
|
|
|
elsif Msg_Buffer (M) = '(' and then Msg_Buffer (Msglen) = ')' then
|
|
|
|
-- Case where existing message ends in right paren, remove
|
|
-- and separate parenthetical remarks with a comma.
|
|
|
|
if Newm (Newl) = ')' then
|
|
Newm (Newl) := ',';
|
|
Msg_Buffer (M) := ' ';
|
|
|
|
-- Case where we are adding new parenthetical comment
|
|
|
|
else
|
|
Newl := Newl + 1;
|
|
Newm (Newl) := ' ';
|
|
end if;
|
|
|
|
-- Case where continuation not in parens and no new line
|
|
|
|
else
|
|
Newm (Newl + 1 .. Newl + 2) := ", ";
|
|
Newl := Newl + 2;
|
|
end if;
|
|
|
|
-- Append new message
|
|
|
|
Newm (Newl + 1 .. Newl + Msglen - M + 1) :=
|
|
Msg_Buffer (M .. Msglen);
|
|
Newl := Newl + Msglen - M + 1;
|
|
Errors.Table (Cur_Msg).Text := new String'(Newm (1 .. Newl));
|
|
|
|
-- Update warning msg flag and message doc char if needed
|
|
|
|
if Is_Warning_Msg then
|
|
if not Errors.Table (Cur_Msg).Warn then
|
|
Errors.Table (Cur_Msg).Warn := True;
|
|
Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
|
|
|
|
elsif Warning_Msg_Char /= ' ' then
|
|
Errors.Table (Cur_Msg).Warn_Chr := Warning_Msg_Char;
|
|
end if;
|
|
end if;
|
|
end;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Here we build a new error object
|
|
|
|
Errors.Append
|
|
((Text => new String'(Msg_Buffer (1 .. Msglen)),
|
|
Next => No_Error_Msg,
|
|
Prev => No_Error_Msg,
|
|
Sptr => Sptr,
|
|
Optr => Optr,
|
|
Sfile => Get_Source_File_Index (Sptr),
|
|
Line => Get_Physical_Line_Number (Sptr),
|
|
Col => Get_Column_Number (Sptr),
|
|
Warn => Is_Warning_Msg,
|
|
Info => Is_Info_Msg,
|
|
Check => Is_Check_Msg,
|
|
Warn_Err => False, -- reset below
|
|
Warn_Chr => Warning_Msg_Char,
|
|
Style => Is_Style_Msg,
|
|
Serious => Is_Serious_Error,
|
|
Uncond => Is_Unconditional_Msg,
|
|
Msg_Cont => Continuation,
|
|
Deleted => False));
|
|
Cur_Msg := Errors.Last;
|
|
|
|
-- Test if warning to be treated as error
|
|
|
|
Warn_Err :=
|
|
Is_Warning_Msg
|
|
and then (Warning_Treated_As_Error (Msg_Buffer (1 .. Msglen))
|
|
or else
|
|
Warning_Treated_As_Error (Get_Warning_Tag (Cur_Msg)));
|
|
|
|
-- Propagate Warn_Err to this message and preceding continuations
|
|
|
|
for J in reverse 1 .. Errors.Last loop
|
|
Errors.Table (J).Warn_Err := Warn_Err;
|
|
exit when not Errors.Table (J).Msg_Cont;
|
|
end loop;
|
|
|
|
-- If immediate errors mode set, output error message now. Also output
|
|
-- now if the -d1 debug flag is set (so node number message comes out
|
|
-- just before actual error message)
|
|
|
|
if Debug_Flag_OO or else Debug_Flag_1 then
|
|
Write_Eol;
|
|
Output_Source_Line
|
|
(Errors.Table (Cur_Msg).Line, Errors.Table (Cur_Msg).Sfile, True);
|
|
Temp_Msg := Cur_Msg;
|
|
Output_Error_Msgs (Temp_Msg);
|
|
|
|
-- If not in immediate errors mode, then we insert the message in the
|
|
-- error chain for later output by Finalize. The messages are sorted
|
|
-- first by unit (main unit comes first), and within a unit by source
|
|
-- location (earlier flag location first in the chain).
|
|
|
|
else
|
|
-- First a quick check, does this belong at the very end of the chain
|
|
-- of error messages. This saves a lot of time in the normal case if
|
|
-- there are lots of messages.
|
|
|
|
if Last_Error_Msg /= No_Error_Msg
|
|
and then Errors.Table (Cur_Msg).Sfile =
|
|
Errors.Table (Last_Error_Msg).Sfile
|
|
and then (Sptr > Errors.Table (Last_Error_Msg).Sptr
|
|
or else
|
|
(Sptr = Errors.Table (Last_Error_Msg).Sptr
|
|
and then
|
|
Optr > Errors.Table (Last_Error_Msg).Optr))
|
|
then
|
|
Prev_Msg := Last_Error_Msg;
|
|
Next_Msg := No_Error_Msg;
|
|
|
|
-- Otherwise do a full sequential search for the insertion point
|
|
|
|
else
|
|
Prev_Msg := No_Error_Msg;
|
|
Next_Msg := First_Error_Msg;
|
|
while Next_Msg /= No_Error_Msg loop
|
|
exit when
|
|
Errors.Table (Cur_Msg).Sfile < Errors.Table (Next_Msg).Sfile;
|
|
|
|
if Errors.Table (Cur_Msg).Sfile = Errors.Table (Next_Msg).Sfile
|
|
then
|
|
exit when Sptr < Errors.Table (Next_Msg).Sptr
|
|
or else (Sptr = Errors.Table (Next_Msg).Sptr
|
|
and then Optr < Errors.Table (Next_Msg).Optr);
|
|
end if;
|
|
|
|
Prev_Msg := Next_Msg;
|
|
Next_Msg := Errors.Table (Next_Msg).Next;
|
|
end loop;
|
|
end if;
|
|
|
|
-- Now we insert the new message in the error chain.
|
|
|
|
-- The possible insertion point for the new message is after Prev_Msg
|
|
-- and before Next_Msg. However, this is where we do a special check
|
|
-- for redundant parsing messages, defined as messages posted on the
|
|
-- same line. The idea here is that probably such messages are junk
|
|
-- from the parser recovering. In full errors mode, we don't do this
|
|
-- deletion, but otherwise such messages are discarded at this stage.
|
|
|
|
if Prev_Msg /= No_Error_Msg
|
|
and then Errors.Table (Prev_Msg).Line =
|
|
Errors.Table (Cur_Msg).Line
|
|
and then Errors.Table (Prev_Msg).Sfile =
|
|
Errors.Table (Cur_Msg).Sfile
|
|
and then Compiler_State = Parsing
|
|
and then not All_Errors_Mode
|
|
then
|
|
-- Don't delete unconditional messages and at this stage, don't
|
|
-- delete continuation lines; we attempted to delete those earlier
|
|
-- if the parent message was deleted.
|
|
|
|
if not Errors.Table (Cur_Msg).Uncond
|
|
and then not Continuation
|
|
then
|
|
-- Don't delete if prev msg is warning and new msg is an error.
|
|
-- This is because we don't want a real error masked by a
|
|
-- warning. In all other cases (that is parse errors for the
|
|
-- same line that are not unconditional) we do delete the
|
|
-- message. This helps to avoid junk extra messages from
|
|
-- cascaded parsing errors
|
|
|
|
if not (Errors.Table (Prev_Msg).Warn
|
|
or else
|
|
Errors.Table (Prev_Msg).Style)
|
|
or else
|
|
(Errors.Table (Cur_Msg).Warn
|
|
or else
|
|
Errors.Table (Cur_Msg).Style)
|
|
then
|
|
-- All tests passed, delete the message by simply returning
|
|
-- without any further processing.
|
|
|
|
pragma Assert (not Continuation);
|
|
|
|
Last_Killed := True;
|
|
return;
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
-- Come here if message is to be inserted in the error chain
|
|
|
|
if not Continuation then
|
|
Last_Killed := False;
|
|
end if;
|
|
|
|
if Prev_Msg = No_Error_Msg then
|
|
First_Error_Msg := Cur_Msg;
|
|
else
|
|
Errors.Table (Prev_Msg).Next := Cur_Msg;
|
|
end if;
|
|
|
|
Errors.Table (Cur_Msg).Next := Next_Msg;
|
|
|
|
if Next_Msg = No_Error_Msg then
|
|
Last_Error_Msg := Cur_Msg;
|
|
end if;
|
|
end if;
|
|
|
|
-- Bump appropriate statistics counts
|
|
|
|
if Errors.Table (Cur_Msg).Info then
|
|
Info_Messages := Info_Messages + 1;
|
|
|
|
-- Could be (usually is) both "info" and "warning"
|
|
|
|
if Errors.Table (Cur_Msg).Warn then
|
|
Warnings_Detected := Warnings_Detected + 1;
|
|
end if;
|
|
|
|
elsif Errors.Table (Cur_Msg).Warn
|
|
or else Errors.Table (Cur_Msg).Style
|
|
then
|
|
Warnings_Detected := Warnings_Detected + 1;
|
|
|
|
elsif Errors.Table (Cur_Msg).Check then
|
|
Check_Messages := Check_Messages + 1;
|
|
|
|
else
|
|
Total_Errors_Detected := Total_Errors_Detected + 1;
|
|
|
|
if Errors.Table (Cur_Msg).Serious then
|
|
Serious_Errors_Detected := Serious_Errors_Detected + 1;
|
|
Handle_Serious_Error;
|
|
|
|
-- If not serious error, set Fatal_Error to indicate ignored error
|
|
|
|
else
|
|
declare
|
|
U : constant Unit_Number_Type := Get_Source_Unit (Sptr);
|
|
begin
|
|
if Fatal_Error (U) = None then
|
|
Set_Fatal_Error (U, Error_Ignored);
|
|
end if;
|
|
end;
|
|
end if;
|
|
end if;
|
|
|
|
-- Record warning message issued
|
|
|
|
if Errors.Table (Cur_Msg).Warn
|
|
and then not Errors.Table (Cur_Msg).Msg_Cont
|
|
then
|
|
Warning_Msg := Cur_Msg;
|
|
end if;
|
|
|
|
-- If too many warnings turn off warnings
|
|
|
|
if Maximum_Messages /= 0 then
|
|
if Warnings_Detected = Maximum_Messages then
|
|
Warning_Mode := Suppress;
|
|
end if;
|
|
|
|
-- If too many errors abandon compilation
|
|
|
|
if Total_Errors_Detected = Maximum_Messages then
|
|
raise Unrecoverable_Error;
|
|
end if;
|
|
end if;
|
|
end Error_Msg_Internal;
|
|
|
|
-----------------
|
|
-- Error_Msg_N --
|
|
-----------------
|
|
|
|
procedure Error_Msg_N (Msg : String; N : Node_Or_Entity_Id) is
|
|
begin
|
|
Error_Msg_NEL (Msg, N, N, Sloc (N));
|
|
end Error_Msg_N;
|
|
|
|
------------------
|
|
-- Error_Msg_NE --
|
|
------------------
|
|
|
|
procedure Error_Msg_NE
|
|
(Msg : String;
|
|
N : Node_Or_Entity_Id;
|
|
E : Node_Or_Entity_Id)
|
|
is
|
|
begin
|
|
Error_Msg_NEL (Msg, N, E, Sloc (N));
|
|
end Error_Msg_NE;
|
|
|
|
-------------------
|
|
-- Error_Msg_NEL --
|
|
-------------------
|
|
|
|
procedure Error_Msg_NEL
|
|
(Msg : String;
|
|
N : Node_Or_Entity_Id;
|
|
E : Node_Or_Entity_Id;
|
|
Flag_Location : Source_Ptr)
|
|
is
|
|
begin
|
|
if Special_Msg_Delete (Msg, N, E) then
|
|
return;
|
|
end if;
|
|
|
|
Prescan_Message (Msg);
|
|
|
|
-- Special handling for warning messages
|
|
|
|
if Is_Warning_Msg then
|
|
|
|
-- Suppress if no warnings set for either entity or node
|
|
|
|
if No_Warnings (N) or else No_Warnings (E) then
|
|
|
|
-- Disable any continuation messages as well
|
|
|
|
Last_Killed := True;
|
|
return;
|
|
end if;
|
|
|
|
-- Suppress if inside loop that is known to be null or is probably
|
|
-- null (case where loop executes only if invalid values present).
|
|
-- In either case warnings in the loop are likely to be junk.
|
|
|
|
declare
|
|
P : Node_Id;
|
|
|
|
begin
|
|
P := Parent (N);
|
|
while Present (P) loop
|
|
if Nkind (P) = N_Loop_Statement
|
|
and then Suppress_Loop_Warnings (P)
|
|
then
|
|
return;
|
|
end if;
|
|
|
|
P := Parent (P);
|
|
end loop;
|
|
end;
|
|
end if;
|
|
|
|
-- Test for message to be output
|
|
|
|
if All_Errors_Mode
|
|
or else Is_Unconditional_Msg
|
|
or else Is_Warning_Msg
|
|
or else OK_Node (N)
|
|
or else (Msg (Msg'First) = '\' and then not Last_Killed)
|
|
then
|
|
Debug_Output (N);
|
|
Error_Msg_Node_1 := E;
|
|
Error_Msg (Msg, Flag_Location);
|
|
|
|
else
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
Set_Posted (N);
|
|
end Error_Msg_NEL;
|
|
|
|
------------------
|
|
-- Error_Msg_NW --
|
|
------------------
|
|
|
|
procedure Error_Msg_NW
|
|
(Eflag : Boolean;
|
|
Msg : String;
|
|
N : Node_Or_Entity_Id)
|
|
is
|
|
begin
|
|
if Eflag
|
|
and then In_Extended_Main_Source_Unit (N)
|
|
and then Comes_From_Source (N)
|
|
then
|
|
Error_Msg_NEL (Msg, N, N, Sloc (N));
|
|
end if;
|
|
end Error_Msg_NW;
|
|
|
|
-----------------
|
|
-- Error_Msg_S --
|
|
-----------------
|
|
|
|
procedure Error_Msg_S (Msg : String) is
|
|
begin
|
|
Error_Msg (Msg, Scan_Ptr);
|
|
end Error_Msg_S;
|
|
|
|
------------------
|
|
-- Error_Msg_SC --
|
|
------------------
|
|
|
|
procedure Error_Msg_SC (Msg : String) is
|
|
begin
|
|
-- If we are at end of file, post the flag after the previous token
|
|
|
|
if Token = Tok_EOF then
|
|
Error_Msg_AP (Msg);
|
|
|
|
-- For all other cases the message is posted at the current token
|
|
-- pointer position
|
|
|
|
else
|
|
Error_Msg (Msg, Token_Ptr);
|
|
end if;
|
|
end Error_Msg_SC;
|
|
|
|
------------------
|
|
-- Error_Msg_SP --
|
|
------------------
|
|
|
|
procedure Error_Msg_SP (Msg : String) is
|
|
begin
|
|
-- Note: in the case where there is no previous token, Prev_Token_Ptr
|
|
-- is set to Source_First, which is a reasonable position for the
|
|
-- error flag in this situation
|
|
|
|
Error_Msg (Msg, Prev_Token_Ptr);
|
|
end Error_Msg_SP;
|
|
|
|
--------------
|
|
-- Finalize --
|
|
--------------
|
|
|
|
procedure Finalize (Last_Call : Boolean) is
|
|
Cur : Error_Msg_Id;
|
|
Nxt : Error_Msg_Id;
|
|
F : Error_Msg_Id;
|
|
|
|
procedure Delete_Warning (E : Error_Msg_Id);
|
|
-- Delete a warning msg if not already deleted and adjust warning count
|
|
|
|
--------------------
|
|
-- Delete_Warning --
|
|
--------------------
|
|
|
|
procedure Delete_Warning (E : Error_Msg_Id) is
|
|
begin
|
|
if not Errors.Table (E).Deleted then
|
|
Errors.Table (E).Deleted := True;
|
|
Warnings_Detected := Warnings_Detected - 1;
|
|
|
|
if Errors.Table (E).Info then
|
|
Info_Messages := Info_Messages - 1;
|
|
end if;
|
|
|
|
if Errors.Table (E).Warn_Err then
|
|
Warnings_Treated_As_Errors := Warnings_Treated_As_Errors - 1;
|
|
end if;
|
|
end if;
|
|
end Delete_Warning;
|
|
|
|
-- Start of processing for Finalize
|
|
|
|
begin
|
|
-- Set Prev pointers
|
|
|
|
Cur := First_Error_Msg;
|
|
while Cur /= No_Error_Msg loop
|
|
Nxt := Errors.Table (Cur).Next;
|
|
exit when Nxt = No_Error_Msg;
|
|
Errors.Table (Nxt).Prev := Cur;
|
|
Cur := Nxt;
|
|
end loop;
|
|
|
|
-- Eliminate any duplicated error messages from the list. This is
|
|
-- done after the fact to avoid problems with Change_Error_Text.
|
|
|
|
Cur := First_Error_Msg;
|
|
while Cur /= No_Error_Msg loop
|
|
Nxt := Errors.Table (Cur).Next;
|
|
|
|
F := Nxt;
|
|
while F /= No_Error_Msg
|
|
and then Errors.Table (F).Sptr = Errors.Table (Cur).Sptr
|
|
loop
|
|
Check_Duplicate_Message (Cur, F);
|
|
F := Errors.Table (F).Next;
|
|
end loop;
|
|
|
|
Cur := Nxt;
|
|
end loop;
|
|
|
|
-- Mark any messages suppressed by specific warnings as Deleted
|
|
|
|
Cur := First_Error_Msg;
|
|
while Cur /= No_Error_Msg loop
|
|
declare
|
|
CE : Error_Msg_Object renames Errors.Table (Cur);
|
|
Tag : constant String := Get_Warning_Tag (Cur);
|
|
|
|
begin
|
|
if (CE.Warn and not CE.Deleted)
|
|
and then
|
|
(Warning_Specifically_Suppressed (CE.Sptr, CE.Text, Tag) /=
|
|
No_String
|
|
or else
|
|
Warning_Specifically_Suppressed (CE.Optr, CE.Text, Tag) /=
|
|
No_String)
|
|
then
|
|
Delete_Warning (Cur);
|
|
|
|
-- If this is a continuation, delete previous parts of message
|
|
|
|
F := Cur;
|
|
while Errors.Table (F).Msg_Cont loop
|
|
F := Errors.Table (F).Prev;
|
|
exit when F = No_Error_Msg;
|
|
Delete_Warning (F);
|
|
end loop;
|
|
|
|
-- Delete any following continuations
|
|
|
|
F := Cur;
|
|
loop
|
|
F := Errors.Table (F).Next;
|
|
exit when F = No_Error_Msg;
|
|
exit when not Errors.Table (F).Msg_Cont;
|
|
Delete_Warning (F);
|
|
end loop;
|
|
end if;
|
|
end;
|
|
|
|
Cur := Errors.Table (Cur).Next;
|
|
end loop;
|
|
|
|
Finalize_Called := True;
|
|
|
|
-- Check consistency of specific warnings (may add warnings). We only
|
|
-- do this on the last call, after all possible warnings are posted.
|
|
|
|
if Last_Call then
|
|
Validate_Specific_Warnings (Error_Msg'Access);
|
|
end if;
|
|
end Finalize;
|
|
|
|
----------------
|
|
-- First_Node --
|
|
----------------
|
|
|
|
function First_Node (C : Node_Id) return Node_Id is
|
|
Orig : constant Node_Id := Original_Node (C);
|
|
Loc : constant Source_Ptr := Sloc (Orig);
|
|
Sfile : constant Source_File_Index := Get_Source_File_Index (Loc);
|
|
Earliest : Node_Id;
|
|
Eloc : Source_Ptr;
|
|
|
|
function Test_Earlier (N : Node_Id) return Traverse_Result;
|
|
-- Function applied to every node in the construct
|
|
|
|
procedure Search_Tree_First is new Traverse_Proc (Test_Earlier);
|
|
-- Create traversal procedure
|
|
|
|
------------------
|
|
-- Test_Earlier --
|
|
------------------
|
|
|
|
function Test_Earlier (N : Node_Id) return Traverse_Result is
|
|
Norig : constant Node_Id := Original_Node (N);
|
|
Loc : constant Source_Ptr := Sloc (Norig);
|
|
|
|
begin
|
|
-- Check for earlier
|
|
|
|
if Loc < Eloc
|
|
|
|
-- Ignore nodes with no useful location information
|
|
|
|
and then Loc /= Standard_Location
|
|
and then Loc /= No_Location
|
|
|
|
-- Ignore nodes from a different file. This ensures against cases
|
|
-- of strange foreign code somehow being present. We don't want
|
|
-- wild placement of messages if that happens.
|
|
|
|
and then Get_Source_File_Index (Loc) = Sfile
|
|
then
|
|
Earliest := Norig;
|
|
Eloc := Loc;
|
|
end if;
|
|
|
|
return OK_Orig;
|
|
end Test_Earlier;
|
|
|
|
-- Start of processing for First_Node
|
|
|
|
begin
|
|
if Nkind (Orig) in N_Subexpr then
|
|
Earliest := Orig;
|
|
Eloc := Loc;
|
|
Search_Tree_First (Orig);
|
|
return Earliest;
|
|
|
|
else
|
|
return Orig;
|
|
end if;
|
|
end First_Node;
|
|
|
|
----------------
|
|
-- First_Sloc --
|
|
----------------
|
|
|
|
function First_Sloc (N : Node_Id) return Source_Ptr is
|
|
SI : constant Source_File_Index := Source_Index (Get_Source_Unit (N));
|
|
SF : constant Source_Ptr := Source_First (SI);
|
|
F : Node_Id;
|
|
S : Source_Ptr;
|
|
|
|
begin
|
|
F := First_Node (N);
|
|
S := Sloc (F);
|
|
|
|
-- The following circuit is a bit subtle. When we have parenthesized
|
|
-- expressions, then the Sloc will not record the location of the paren,
|
|
-- but we would like to post the flag on the paren. So what we do is to
|
|
-- crawl up the tree from the First_Node, adjusting the Sloc value for
|
|
-- any parentheses we know are present. Yes, we know this circuit is not
|
|
-- 100% reliable (e.g. because we don't record all possible paren level
|
|
-- values), but this is only for an error message so it is good enough.
|
|
|
|
Node_Loop : loop
|
|
Paren_Loop : for J in 1 .. Paren_Count (F) loop
|
|
|
|
-- We don't look more than 12 characters behind the current
|
|
-- location, and in any case not past the front of the source.
|
|
|
|
Search_Loop : for K in 1 .. 12 loop
|
|
exit Search_Loop when S = SF;
|
|
|
|
if Source_Text (SI) (S - 1) = '(' then
|
|
S := S - 1;
|
|
exit Search_Loop;
|
|
|
|
elsif Source_Text (SI) (S - 1) <= ' ' then
|
|
S := S - 1;
|
|
|
|
else
|
|
exit Search_Loop;
|
|
end if;
|
|
end loop Search_Loop;
|
|
end loop Paren_Loop;
|
|
|
|
exit Node_Loop when F = N;
|
|
F := Parent (F);
|
|
exit Node_Loop when Nkind (F) not in N_Subexpr;
|
|
end loop Node_Loop;
|
|
|
|
return S;
|
|
end First_Sloc;
|
|
|
|
-----------------------
|
|
-- Get_Ignore_Errors --
|
|
-----------------------
|
|
|
|
function Get_Ignore_Errors return Boolean is
|
|
begin
|
|
return Errors_Must_Be_Ignored;
|
|
end Get_Ignore_Errors;
|
|
|
|
----------------
|
|
-- Initialize --
|
|
----------------
|
|
|
|
procedure Initialize is
|
|
begin
|
|
Errors.Init;
|
|
First_Error_Msg := No_Error_Msg;
|
|
Last_Error_Msg := No_Error_Msg;
|
|
Serious_Errors_Detected := 0;
|
|
Total_Errors_Detected := 0;
|
|
Cur_Msg := No_Error_Msg;
|
|
List_Pragmas.Init;
|
|
|
|
-- Reset counts for warnings
|
|
|
|
Reset_Warnings;
|
|
|
|
-- Initialize warnings tables
|
|
|
|
Warnings.Init;
|
|
Specific_Warnings.Init;
|
|
end Initialize;
|
|
|
|
-----------------
|
|
-- No_Warnings --
|
|
-----------------
|
|
|
|
function No_Warnings (N : Node_Or_Entity_Id) return Boolean is
|
|
begin
|
|
if Error_Posted (N) then
|
|
return True;
|
|
|
|
elsif Nkind (N) in N_Entity and then Has_Warnings_Off (N) then
|
|
return True;
|
|
|
|
elsif Is_Entity_Name (N)
|
|
and then Present (Entity (N))
|
|
and then Has_Warnings_Off (Entity (N))
|
|
then
|
|
return True;
|
|
|
|
else
|
|
return False;
|
|
end if;
|
|
end No_Warnings;
|
|
|
|
-------------
|
|
-- OK_Node --
|
|
-------------
|
|
|
|
function OK_Node (N : Node_Id) return Boolean is
|
|
K : constant Node_Kind := Nkind (N);
|
|
|
|
begin
|
|
if Error_Posted (N) then
|
|
return False;
|
|
|
|
elsif K in N_Has_Etype
|
|
and then Present (Etype (N))
|
|
and then Error_Posted (Etype (N))
|
|
then
|
|
return False;
|
|
|
|
elsif (K in N_Op
|
|
or else K = N_Attribute_Reference
|
|
or else K = N_Character_Literal
|
|
or else K = N_Expanded_Name
|
|
or else K = N_Identifier
|
|
or else K = N_Operator_Symbol)
|
|
and then Present (Entity (N))
|
|
and then Error_Posted (Entity (N))
|
|
then
|
|
return False;
|
|
else
|
|
return True;
|
|
end if;
|
|
end OK_Node;
|
|
|
|
---------------------
|
|
-- Output_Messages --
|
|
---------------------
|
|
|
|
procedure Output_Messages is
|
|
E : Error_Msg_Id;
|
|
Err_Flag : Boolean;
|
|
|
|
procedure Write_Error_Summary;
|
|
-- Write error summary
|
|
|
|
procedure Write_Header (Sfile : Source_File_Index);
|
|
-- Write header line (compiling or checking given file)
|
|
|
|
procedure Write_Max_Errors;
|
|
-- Write message if max errors reached
|
|
|
|
-------------------------
|
|
-- Write_Error_Summary --
|
|
-------------------------
|
|
|
|
procedure Write_Error_Summary is
|
|
begin
|
|
-- Extra blank line if error messages or source listing were output
|
|
|
|
if Total_Errors_Detected + Warnings_Detected > 0 or else Full_List
|
|
then
|
|
Write_Eol;
|
|
end if;
|
|
|
|
-- Message giving number of lines read and number of errors detected.
|
|
-- This normally goes to Standard_Output. The exception is when brief
|
|
-- mode is not set, verbose mode (or full list mode) is set, and
|
|
-- there are errors. In this case we send the message to standard
|
|
-- error to make sure that *something* appears on standard error
|
|
-- in an error situation.
|
|
|
|
if Total_Errors_Detected + Warnings_Detected /= 0
|
|
and then not Brief_Output
|
|
and then (Verbose_Mode or Full_List)
|
|
then
|
|
Set_Standard_Error;
|
|
end if;
|
|
|
|
-- Message giving total number of lines. Don't give this message if
|
|
-- the Main_Source line is unknown (this happens in error situations,
|
|
-- e.g. when integrated preprocessing fails).
|
|
|
|
if Main_Source_File /= No_Source_File then
|
|
Write_Str (" ");
|
|
Write_Int (Num_Source_Lines (Main_Source_File));
|
|
|
|
if Num_Source_Lines (Main_Source_File) = 1 then
|
|
Write_Str (" line: ");
|
|
else
|
|
Write_Str (" lines: ");
|
|
end if;
|
|
end if;
|
|
|
|
if Total_Errors_Detected = 0 then
|
|
Write_Str ("No errors");
|
|
|
|
elsif Total_Errors_Detected = 1 then
|
|
Write_Str ("1 error");
|
|
|
|
else
|
|
Write_Int (Total_Errors_Detected);
|
|
Write_Str (" errors");
|
|
end if;
|
|
|
|
if Warnings_Detected - Info_Messages /= 0 then
|
|
Write_Str (", ");
|
|
Write_Int (Warnings_Detected);
|
|
Write_Str (" warning");
|
|
|
|
if Warnings_Detected - Info_Messages /= 1 then
|
|
Write_Char ('s');
|
|
end if;
|
|
|
|
if Warning_Mode = Treat_As_Error then
|
|
Write_Str (" (treated as error");
|
|
|
|
if Warnings_Detected /= 1 then
|
|
Write_Char ('s');
|
|
end if;
|
|
|
|
Write_Char (')');
|
|
|
|
elsif Warnings_Treated_As_Errors /= 0 then
|
|
Write_Str (" (");
|
|
Write_Int (Warnings_Treated_As_Errors);
|
|
Write_Str (" treated as errors)");
|
|
end if;
|
|
end if;
|
|
|
|
if Info_Messages /= 0 then
|
|
Write_Str (", ");
|
|
Write_Int (Info_Messages);
|
|
Write_Str (" info message");
|
|
|
|
if Info_Messages > 1 then
|
|
Write_Char ('s');
|
|
end if;
|
|
end if;
|
|
|
|
Write_Eol;
|
|
Set_Standard_Output;
|
|
end Write_Error_Summary;
|
|
|
|
------------------
|
|
-- Write_Header --
|
|
------------------
|
|
|
|
procedure Write_Header (Sfile : Source_File_Index) is
|
|
begin
|
|
if Verbose_Mode or Full_List then
|
|
if Original_Operating_Mode = Generate_Code then
|
|
Write_Str ("Compiling: ");
|
|
else
|
|
Write_Str ("Checking: ");
|
|
end if;
|
|
|
|
Write_Name (Full_File_Name (Sfile));
|
|
|
|
if not Debug_Flag_7 then
|
|
Write_Eol;
|
|
Write_Str ("Source file time stamp: ");
|
|
Write_Time_Stamp (Sfile);
|
|
Write_Eol;
|
|
Write_Str ("Compiled at: " & Compilation_Time);
|
|
end if;
|
|
|
|
Write_Eol;
|
|
end if;
|
|
end Write_Header;
|
|
|
|
----------------------
|
|
-- Write_Max_Errors --
|
|
----------------------
|
|
|
|
procedure Write_Max_Errors is
|
|
begin
|
|
if Maximum_Messages /= 0 then
|
|
if Warnings_Detected >= Maximum_Messages then
|
|
Set_Standard_Error;
|
|
Write_Line ("maximum number of warnings output");
|
|
Write_Line ("any further warnings suppressed");
|
|
Set_Standard_Output;
|
|
end if;
|
|
|
|
-- If too many errors print message
|
|
|
|
if Total_Errors_Detected >= Maximum_Messages then
|
|
Set_Standard_Error;
|
|
Write_Line ("fatal error: maximum number of errors detected");
|
|
Set_Standard_Output;
|
|
end if;
|
|
end if;
|
|
end Write_Max_Errors;
|
|
|
|
-- Start of processing for Output_Messages
|
|
|
|
begin
|
|
-- Error if Finalize has not been called
|
|
|
|
if not Finalize_Called then
|
|
raise Program_Error;
|
|
end if;
|
|
|
|
-- Reset current error source file if the main unit has a pragma
|
|
-- Source_Reference. This ensures outputting the proper name of
|
|
-- the source file in this situation.
|
|
|
|
if Main_Source_File = No_Source_File
|
|
or else Num_SRef_Pragmas (Main_Source_File) /= 0
|
|
then
|
|
Current_Error_Source_File := No_Source_File;
|
|
end if;
|
|
|
|
-- Brief Error mode
|
|
|
|
if Brief_Output or (not Full_List and not Verbose_Mode) then
|
|
Set_Standard_Error;
|
|
|
|
E := First_Error_Msg;
|
|
while E /= No_Error_Msg loop
|
|
if not Errors.Table (E).Deleted and then not Debug_Flag_KK then
|
|
if Full_Path_Name_For_Brief_Errors then
|
|
Write_Name (Full_Ref_Name (Errors.Table (E).Sfile));
|
|
else
|
|
Write_Name (Reference_Name (Errors.Table (E).Sfile));
|
|
end if;
|
|
|
|
Write_Char (':');
|
|
Write_Int (Int (Physical_To_Logical
|
|
(Errors.Table (E).Line,
|
|
Errors.Table (E).Sfile)));
|
|
Write_Char (':');
|
|
|
|
if Errors.Table (E).Col < 10 then
|
|
Write_Char ('0');
|
|
end if;
|
|
|
|
Write_Int (Int (Errors.Table (E).Col));
|
|
Write_Str (": ");
|
|
Output_Msg_Text (E);
|
|
Write_Eol;
|
|
end if;
|
|
|
|
E := Errors.Table (E).Next;
|
|
end loop;
|
|
|
|
Set_Standard_Output;
|
|
end if;
|
|
|
|
-- Full source listing case
|
|
|
|
if Full_List then
|
|
List_Pragmas_Index := 1;
|
|
List_Pragmas_Mode := True;
|
|
E := First_Error_Msg;
|
|
|
|
-- Normal case, to stdout (copyright notice already output)
|
|
|
|
if Full_List_File_Name = null then
|
|
if not Debug_Flag_7 then
|
|
Write_Eol;
|
|
end if;
|
|
|
|
-- Output to file
|
|
|
|
else
|
|
Create_List_File_Access.all (Full_List_File_Name.all);
|
|
Set_Special_Output (Write_List_Info_Access.all'Access);
|
|
|
|
-- Write copyright notice to file
|
|
|
|
if not Debug_Flag_7 then
|
|
Write_Str ("GNAT ");
|
|
Write_Str (Gnat_Version_String);
|
|
Write_Eol;
|
|
Write_Str ("Copyright 1992-" &
|
|
Current_Year &
|
|
", Free Software Foundation, Inc.");
|
|
Write_Eol;
|
|
end if;
|
|
end if;
|
|
|
|
-- First list extended main source file units with errors
|
|
|
|
for U in Main_Unit .. Last_Unit loop
|
|
if In_Extended_Main_Source_Unit (Cunit_Entity (U))
|
|
|
|
-- If debug flag d.m is set, only the main source is listed
|
|
|
|
and then (U = Main_Unit or else not Debug_Flag_Dot_M)
|
|
|
|
-- If the unit of the entity does not come from source, it is
|
|
-- an implicit subprogram declaration for a child subprogram.
|
|
-- Do not emit errors for it, they are listed with the body.
|
|
|
|
and then
|
|
(No (Cunit_Entity (U))
|
|
or else Comes_From_Source (Cunit_Entity (U))
|
|
or else not Is_Subprogram (Cunit_Entity (U)))
|
|
|
|
-- If the compilation unit associated with this unit does not
|
|
-- come from source, it means it is an instantiation that should
|
|
-- not be included in the source listing.
|
|
|
|
and then Comes_From_Source (Cunit (U))
|
|
then
|
|
declare
|
|
Sfile : constant Source_File_Index := Source_Index (U);
|
|
|
|
begin
|
|
Write_Eol;
|
|
|
|
-- Only write the header if Sfile is known
|
|
|
|
if Sfile /= No_Source_File then
|
|
Write_Header (Sfile);
|
|
Write_Eol;
|
|
end if;
|
|
|
|
-- Normally, we don't want an "error messages from file"
|
|
-- message when listing the entire file, so we set the
|
|
-- current source file as the current error source file.
|
|
-- However, the old style of doing things was to list this
|
|
-- message if pragma Source_Reference is present, even for
|
|
-- the main unit. Since the purpose of the -gnatd.m switch
|
|
-- is to duplicate the old behavior, we skip the reset if
|
|
-- this debug flag is set.
|
|
|
|
if not Debug_Flag_Dot_M then
|
|
Current_Error_Source_File := Sfile;
|
|
end if;
|
|
|
|
-- Only output the listing if Sfile is known, to avoid
|
|
-- crashing the compiler.
|
|
|
|
if Sfile /= No_Source_File then
|
|
for N in 1 .. Last_Source_Line (Sfile) loop
|
|
while E /= No_Error_Msg
|
|
and then Errors.Table (E).Deleted
|
|
loop
|
|
E := Errors.Table (E).Next;
|
|
end loop;
|
|
|
|
Err_Flag :=
|
|
E /= No_Error_Msg
|
|
and then Errors.Table (E).Line = N
|
|
and then Errors.Table (E).Sfile = Sfile;
|
|
|
|
Output_Source_Line (N, Sfile, Err_Flag);
|
|
|
|
if Err_Flag then
|
|
Output_Error_Msgs (E);
|
|
|
|
if not Debug_Flag_2 then
|
|
Write_Eol;
|
|
end if;
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
end;
|
|
end if;
|
|
end loop;
|
|
|
|
-- Then output errors, if any, for subsidiary units not in the
|
|
-- main extended unit.
|
|
|
|
-- Note: if debug flag d.m set, include errors for any units other
|
|
-- than the main unit in the extended source unit (e.g. spec and
|
|
-- subunits for a body).
|
|
|
|
while E /= No_Error_Msg
|
|
and then (not In_Extended_Main_Source_Unit (Errors.Table (E).Sptr)
|
|
or else
|
|
(Debug_Flag_Dot_M
|
|
and then Get_Source_Unit
|
|
(Errors.Table (E).Sptr) /= Main_Unit))
|
|
loop
|
|
if Errors.Table (E).Deleted then
|
|
E := Errors.Table (E).Next;
|
|
|
|
else
|
|
Write_Eol;
|
|
Output_Source_Line
|
|
(Errors.Table (E).Line, Errors.Table (E).Sfile, True);
|
|
Output_Error_Msgs (E);
|
|
end if;
|
|
end loop;
|
|
|
|
-- If output to file, write extra copy of error summary to the
|
|
-- output file, and then close it.
|
|
|
|
if Full_List_File_Name /= null then
|
|
Write_Error_Summary;
|
|
Write_Max_Errors;
|
|
Close_List_File_Access.all;
|
|
Cancel_Special_Output;
|
|
end if;
|
|
end if;
|
|
|
|
-- Verbose mode (error lines only with error flags). Normally this is
|
|
-- ignored in full list mode, unless we are listing to a file, in which
|
|
-- case we still generate -gnatv output to standard output.
|
|
|
|
if Verbose_Mode
|
|
and then (not Full_List or else Full_List_File_Name /= null)
|
|
then
|
|
Write_Eol;
|
|
|
|
-- Output the header only when Main_Source_File is known
|
|
|
|
if Main_Source_File /= No_Source_File then
|
|
Write_Header (Main_Source_File);
|
|
end if;
|
|
|
|
E := First_Error_Msg;
|
|
|
|
-- Loop through error lines
|
|
|
|
while E /= No_Error_Msg loop
|
|
if Errors.Table (E).Deleted then
|
|
E := Errors.Table (E).Next;
|
|
else
|
|
Write_Eol;
|
|
Output_Source_Line
|
|
(Errors.Table (E).Line, Errors.Table (E).Sfile, True);
|
|
Output_Error_Msgs (E);
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
|
|
-- Output error summary if verbose or full list mode
|
|
|
|
if Verbose_Mode or else Full_List then
|
|
Write_Error_Summary;
|
|
end if;
|
|
|
|
Write_Max_Errors;
|
|
|
|
if Warning_Mode = Treat_As_Error then
|
|
Total_Errors_Detected :=
|
|
Total_Errors_Detected + Warnings_Detected - Info_Messages;
|
|
Warnings_Detected := Info_Messages;
|
|
end if;
|
|
end Output_Messages;
|
|
|
|
------------------------
|
|
-- Output_Source_Line --
|
|
------------------------
|
|
|
|
procedure Output_Source_Line
|
|
(L : Physical_Line_Number;
|
|
Sfile : Source_File_Index;
|
|
Errs : Boolean)
|
|
is
|
|
S : Source_Ptr;
|
|
C : Character;
|
|
|
|
Line_Number_Output : Boolean := False;
|
|
-- Set True once line number is output
|
|
|
|
Empty_Line : Boolean := True;
|
|
-- Set False if line includes at least one character
|
|
|
|
begin
|
|
if Sfile /= Current_Error_Source_File then
|
|
Write_Str ("==============Error messages for ");
|
|
|
|
case Sinput.File_Type (Sfile) is
|
|
when Sinput.Src =>
|
|
Write_Str ("source");
|
|
|
|
when Sinput.Config =>
|
|
Write_Str ("configuration pragmas");
|
|
|
|
when Sinput.Def =>
|
|
Write_Str ("symbol definition");
|
|
|
|
when Sinput.Preproc =>
|
|
Write_Str ("preprocessing data");
|
|
end case;
|
|
|
|
Write_Str (" file: ");
|
|
Write_Name (Full_File_Name (Sfile));
|
|
Write_Eol;
|
|
|
|
if Num_SRef_Pragmas (Sfile) > 0 then
|
|
Write_Str ("--------------Line numbers from file: ");
|
|
Write_Name (Full_Ref_Name (Sfile));
|
|
Write_Str (" (starting at line ");
|
|
Write_Int (Int (First_Mapped_Line (Sfile)));
|
|
Write_Char (')');
|
|
Write_Eol;
|
|
end if;
|
|
|
|
Current_Error_Source_File := Sfile;
|
|
end if;
|
|
|
|
if Errs or List_Pragmas_Mode then
|
|
Output_Line_Number (Physical_To_Logical (L, Sfile));
|
|
Line_Number_Output := True;
|
|
end if;
|
|
|
|
S := Line_Start (L, Sfile);
|
|
|
|
loop
|
|
C := Source_Text (Sfile) (S);
|
|
exit when C = ASCII.LF or else C = ASCII.CR or else C = EOF;
|
|
|
|
-- Deal with matching entry in List_Pragmas table
|
|
|
|
if Full_List
|
|
and then List_Pragmas_Index <= List_Pragmas.Last
|
|
and then S = List_Pragmas.Table (List_Pragmas_Index).Ploc
|
|
then
|
|
case List_Pragmas.Table (List_Pragmas_Index).Ptyp is
|
|
when Page =>
|
|
Write_Char (C);
|
|
|
|
-- Ignore if on line with errors so that error flags
|
|
-- get properly listed with the error line .
|
|
|
|
if not Errs then
|
|
Write_Char (ASCII.FF);
|
|
end if;
|
|
|
|
when List_On =>
|
|
List_Pragmas_Mode := True;
|
|
|
|
if not Line_Number_Output then
|
|
Output_Line_Number (Physical_To_Logical (L, Sfile));
|
|
Line_Number_Output := True;
|
|
end if;
|
|
|
|
Write_Char (C);
|
|
|
|
when List_Off =>
|
|
Write_Char (C);
|
|
List_Pragmas_Mode := False;
|
|
end case;
|
|
|
|
List_Pragmas_Index := List_Pragmas_Index + 1;
|
|
|
|
-- Normal case (no matching entry in List_Pragmas table)
|
|
|
|
else
|
|
if Errs or List_Pragmas_Mode then
|
|
Write_Char (C);
|
|
end if;
|
|
end if;
|
|
|
|
Empty_Line := False;
|
|
S := S + 1;
|
|
end loop;
|
|
|
|
-- If we have output a source line, then add the line terminator, with
|
|
-- training spaces preserved (so we output the line exactly as input).
|
|
|
|
if Line_Number_Output then
|
|
if Empty_Line then
|
|
Write_Eol;
|
|
else
|
|
Write_Eol_Keep_Blanks;
|
|
end if;
|
|
end if;
|
|
end Output_Source_Line;
|
|
|
|
-----------------------------
|
|
-- Remove_Warning_Messages --
|
|
-----------------------------
|
|
|
|
procedure Remove_Warning_Messages (N : Node_Id) is
|
|
|
|
function Check_For_Warning (N : Node_Id) return Traverse_Result;
|
|
-- This function checks one node for a possible warning message
|
|
|
|
function Check_All_Warnings is new Traverse_Func (Check_For_Warning);
|
|
-- This defines the traversal operation
|
|
|
|
-----------------------
|
|
-- Check_For_Warning --
|
|
-----------------------
|
|
|
|
function Check_For_Warning (N : Node_Id) return Traverse_Result is
|
|
Loc : constant Source_Ptr := Sloc (N);
|
|
E : Error_Msg_Id;
|
|
|
|
function To_Be_Removed (E : Error_Msg_Id) return Boolean;
|
|
-- Returns True for a message that is to be removed. Also adjusts
|
|
-- warning count appropriately.
|
|
|
|
-------------------
|
|
-- To_Be_Removed --
|
|
-------------------
|
|
|
|
function To_Be_Removed (E : Error_Msg_Id) return Boolean is
|
|
begin
|
|
if E /= No_Error_Msg
|
|
|
|
-- Don't remove if location does not match
|
|
|
|
and then Errors.Table (E).Optr = Loc
|
|
|
|
-- Don't remove if not warning/info message. Note that we do
|
|
-- not remove style messages here. They are warning messages
|
|
-- but not ones we want removed in this context.
|
|
|
|
and then Errors.Table (E).Warn
|
|
|
|
-- Don't remove unconditional messages
|
|
|
|
and then not Errors.Table (E).Uncond
|
|
then
|
|
Warnings_Detected := Warnings_Detected - 1;
|
|
|
|
if Errors.Table (E).Info then
|
|
Info_Messages := Info_Messages - 1;
|
|
end if;
|
|
|
|
return True;
|
|
|
|
-- No removal required
|
|
|
|
else
|
|
return False;
|
|
end if;
|
|
end To_Be_Removed;
|
|
|
|
-- Start of processing for Check_For_Warnings
|
|
|
|
begin
|
|
while To_Be_Removed (First_Error_Msg) loop
|
|
First_Error_Msg := Errors.Table (First_Error_Msg).Next;
|
|
end loop;
|
|
|
|
if First_Error_Msg = No_Error_Msg then
|
|
Last_Error_Msg := No_Error_Msg;
|
|
end if;
|
|
|
|
E := First_Error_Msg;
|
|
while E /= No_Error_Msg loop
|
|
while To_Be_Removed (Errors.Table (E).Next) loop
|
|
Errors.Table (E).Next :=
|
|
Errors.Table (Errors.Table (E).Next).Next;
|
|
|
|
if Errors.Table (E).Next = No_Error_Msg then
|
|
Last_Error_Msg := E;
|
|
end if;
|
|
end loop;
|
|
|
|
E := Errors.Table (E).Next;
|
|
end loop;
|
|
|
|
if Nkind (N) = N_Raise_Constraint_Error
|
|
and then Original_Node (N) /= N
|
|
and then No (Condition (N))
|
|
then
|
|
-- Warnings may have been posted on subexpressions of the original
|
|
-- tree. We place the original node back on the tree to remove
|
|
-- those warnings, whose sloc do not match those of any node in
|
|
-- the current tree. Given that we are in unreachable code, this
|
|
-- modification to the tree is harmless.
|
|
|
|
declare
|
|
Status : Traverse_Final_Result;
|
|
|
|
begin
|
|
if Is_List_Member (N) then
|
|
Set_Condition (N, Original_Node (N));
|
|
Status := Check_All_Warnings (Condition (N));
|
|
else
|
|
Rewrite (N, Original_Node (N));
|
|
Status := Check_All_Warnings (N);
|
|
end if;
|
|
|
|
return Status;
|
|
end;
|
|
|
|
else
|
|
return OK;
|
|
end if;
|
|
end Check_For_Warning;
|
|
|
|
-- Start of processing for Remove_Warning_Messages
|
|
|
|
begin
|
|
if Warnings_Detected /= 0 then
|
|
declare
|
|
Discard : Traverse_Final_Result;
|
|
pragma Warnings (Off, Discard);
|
|
|
|
begin
|
|
Discard := Check_All_Warnings (N);
|
|
end;
|
|
end if;
|
|
end Remove_Warning_Messages;
|
|
|
|
procedure Remove_Warning_Messages (L : List_Id) is
|
|
Stat : Node_Id;
|
|
begin
|
|
if Is_Non_Empty_List (L) then
|
|
Stat := First (L);
|
|
while Present (Stat) loop
|
|
Remove_Warning_Messages (Stat);
|
|
Next (Stat);
|
|
end loop;
|
|
end if;
|
|
end Remove_Warning_Messages;
|
|
|
|
--------------------
|
|
-- Reset_Warnings --
|
|
--------------------
|
|
|
|
procedure Reset_Warnings is
|
|
begin
|
|
Warnings_Treated_As_Errors := 0;
|
|
Warnings_Detected := 0;
|
|
Info_Messages := 0;
|
|
Warnings_As_Errors_Count := 0;
|
|
end Reset_Warnings;
|
|
|
|
----------------------
|
|
-- Adjust_Name_Case --
|
|
----------------------
|
|
|
|
procedure Adjust_Name_Case
|
|
(Buf : in out Bounded_String;
|
|
Loc : Source_Ptr)
|
|
is
|
|
begin
|
|
-- We have an all lower case name from Namet, and now we want to set
|
|
-- the appropriate case. If possible we copy the actual casing from
|
|
-- the source. If not we use standard identifier casing.
|
|
|
|
declare
|
|
Src_Ind : constant Source_File_Index := Get_Source_File_Index (Loc);
|
|
Sbuffer : Source_Buffer_Ptr;
|
|
Ref_Ptr : Integer;
|
|
Src_Ptr : Source_Ptr;
|
|
|
|
begin
|
|
Ref_Ptr := 1;
|
|
Src_Ptr := Loc;
|
|
|
|
-- For standard locations, always use mixed case
|
|
|
|
if Loc <= No_Location then
|
|
Set_Casing (Mixed_Case);
|
|
|
|
else
|
|
-- Determine if the reference we are dealing with corresponds to
|
|
-- text at the point of the error reference. This will often be
|
|
-- the case for simple identifier references, and is the case
|
|
-- where we can copy the casing from the source.
|
|
|
|
Sbuffer := Source_Text (Src_Ind);
|
|
|
|
while Ref_Ptr <= Buf.Length loop
|
|
exit when
|
|
Fold_Lower (Sbuffer (Src_Ptr)) /=
|
|
Fold_Lower (Buf.Chars (Ref_Ptr));
|
|
Ref_Ptr := Ref_Ptr + 1;
|
|
Src_Ptr := Src_Ptr + 1;
|
|
end loop;
|
|
|
|
-- If we get through the loop without a mismatch, then output the
|
|
-- name the way it is cased in the source program
|
|
|
|
if Ref_Ptr > Buf.Length then
|
|
Src_Ptr := Loc;
|
|
|
|
for J in 1 .. Buf.Length loop
|
|
Buf.Chars (J) := Sbuffer (Src_Ptr);
|
|
Src_Ptr := Src_Ptr + 1;
|
|
end loop;
|
|
|
|
-- Otherwise set the casing using the default identifier casing
|
|
|
|
else
|
|
Set_Casing (Buf, Identifier_Casing (Src_Ind));
|
|
end if;
|
|
end if;
|
|
end;
|
|
end Adjust_Name_Case;
|
|
|
|
procedure Adjust_Name_Case (Loc : Source_Ptr) is
|
|
begin
|
|
Adjust_Name_Case (Global_Name_Buffer, Loc);
|
|
end Adjust_Name_Case;
|
|
|
|
---------------------------
|
|
-- Set_Identifier_Casing --
|
|
---------------------------
|
|
|
|
procedure Set_Identifier_Casing
|
|
(Identifier_Name : System.Address;
|
|
File_Name : System.Address)
|
|
is
|
|
Ident : constant Big_String_Ptr := To_Big_String_Ptr (Identifier_Name);
|
|
File : constant Big_String_Ptr := To_Big_String_Ptr (File_Name);
|
|
Flen : Natural;
|
|
|
|
Desired_Case : Casing_Type := Mixed_Case;
|
|
-- Casing required for result. Default value of Mixed_Case is used if
|
|
-- for some reason we cannot find the right file name in the table.
|
|
|
|
begin
|
|
-- Get length of file name
|
|
|
|
Flen := 0;
|
|
while File (Flen + 1) /= ASCII.NUL loop
|
|
Flen := Flen + 1;
|
|
end loop;
|
|
|
|
-- Loop through file names to find matching one. This is a bit slow, but
|
|
-- we only do it in error situations so it is not so terrible. Note that
|
|
-- if the loop does not exit, then the desired case will be left set to
|
|
-- Mixed_Case, this can happen if the name was not in canonical form.
|
|
|
|
for J in 1 .. Last_Source_File loop
|
|
Get_Name_String (Full_Debug_Name (J));
|
|
|
|
if Name_Len = Flen
|
|
and then Name_Buffer (1 .. Name_Len) = String (File (1 .. Flen))
|
|
then
|
|
Desired_Case := Identifier_Casing (J);
|
|
exit;
|
|
end if;
|
|
end loop;
|
|
|
|
-- Copy identifier as given to Name_Buffer
|
|
|
|
for J in Name_Buffer'Range loop
|
|
Name_Buffer (J) := Ident (J);
|
|
|
|
if Name_Buffer (J) = ASCII.NUL then
|
|
Name_Len := J - 1;
|
|
exit;
|
|
end if;
|
|
end loop;
|
|
|
|
Set_Casing (Desired_Case);
|
|
end Set_Identifier_Casing;
|
|
|
|
-----------------------
|
|
-- Set_Ignore_Errors --
|
|
-----------------------
|
|
|
|
procedure Set_Ignore_Errors (To : Boolean) is
|
|
begin
|
|
Errors_Must_Be_Ignored := To;
|
|
end Set_Ignore_Errors;
|
|
|
|
------------------------------
|
|
-- Set_Msg_Insertion_Column --
|
|
------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Column is
|
|
begin
|
|
if RM_Column_Check then
|
|
Set_Msg_Str (" in column ");
|
|
Set_Msg_Int (Int (Error_Msg_Col) + 1);
|
|
end if;
|
|
end Set_Msg_Insertion_Column;
|
|
|
|
----------------------------
|
|
-- Set_Msg_Insertion_Node --
|
|
----------------------------
|
|
|
|
procedure Set_Msg_Insertion_Node is
|
|
K : Node_Kind;
|
|
|
|
begin
|
|
Suppress_Message :=
|
|
Error_Msg_Node_1 = Error
|
|
or else Error_Msg_Node_1 = Any_Type;
|
|
|
|
if Error_Msg_Node_1 = Empty then
|
|
Set_Msg_Blank_Conditional;
|
|
Set_Msg_Str ("<empty>");
|
|
|
|
elsif Error_Msg_Node_1 = Error then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("<error>");
|
|
|
|
elsif Error_Msg_Node_1 = Standard_Void_Type then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("procedure name");
|
|
|
|
elsif Nkind (Error_Msg_Node_1) in N_Entity
|
|
and then Ekind (Error_Msg_Node_1) = E_Anonymous_Access_Subprogram_Type
|
|
then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("access to subprogram");
|
|
|
|
else
|
|
Set_Msg_Blank_Conditional;
|
|
|
|
-- Output name
|
|
|
|
K := Nkind (Error_Msg_Node_1);
|
|
|
|
-- If we have operator case, skip quotes since name of operator
|
|
-- itself will supply the required quotations. An operator can be an
|
|
-- applied use in an expression or an explicit operator symbol, or an
|
|
-- identifier whose name indicates it is an operator.
|
|
|
|
if K in N_Op
|
|
or else K = N_Operator_Symbol
|
|
or else K = N_Defining_Operator_Symbol
|
|
or else ((K = N_Identifier or else K = N_Defining_Identifier)
|
|
and then Is_Operator_Name (Chars (Error_Msg_Node_1)))
|
|
then
|
|
Set_Msg_Node (Error_Msg_Node_1);
|
|
|
|
-- Normal case, not an operator, surround with quotes
|
|
|
|
else
|
|
Set_Msg_Quote;
|
|
Set_Qualification (Error_Msg_Qual_Level, Error_Msg_Node_1);
|
|
Set_Msg_Node (Error_Msg_Node_1);
|
|
Set_Msg_Quote;
|
|
end if;
|
|
end if;
|
|
|
|
-- The following assignment ensures that a second ampersand insertion
|
|
-- character will correspond to the Error_Msg_Node_2 parameter. We
|
|
-- suppress possible validity checks in case operating in -gnatVa mode,
|
|
-- and Error_Msg_Node_2 is not needed and has not been set.
|
|
|
|
declare
|
|
pragma Suppress (Range_Check);
|
|
begin
|
|
Error_Msg_Node_1 := Error_Msg_Node_2;
|
|
end;
|
|
end Set_Msg_Insertion_Node;
|
|
|
|
--------------------------------------
|
|
-- Set_Msg_Insertion_Type_Reference --
|
|
--------------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Type_Reference (Flag : Source_Ptr) is
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
Set_Msg_Blank;
|
|
|
|
if Error_Msg_Node_1 = Standard_Void_Type then
|
|
Set_Msg_Str ("package or procedure name");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Standard_Exception_Type then
|
|
Set_Msg_Str ("exception name");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Any_Access
|
|
or else Error_Msg_Node_1 = Any_Array
|
|
or else Error_Msg_Node_1 = Any_Boolean
|
|
or else Error_Msg_Node_1 = Any_Character
|
|
or else Error_Msg_Node_1 = Any_Composite
|
|
or else Error_Msg_Node_1 = Any_Discrete
|
|
or else Error_Msg_Node_1 = Any_Fixed
|
|
or else Error_Msg_Node_1 = Any_Integer
|
|
or else Error_Msg_Node_1 = Any_Modular
|
|
or else Error_Msg_Node_1 = Any_Numeric
|
|
or else Error_Msg_Node_1 = Any_Real
|
|
or else Error_Msg_Node_1 = Any_Scalar
|
|
or else Error_Msg_Node_1 = Any_String
|
|
then
|
|
Get_Unqualified_Decoded_Name_String (Chars (Error_Msg_Node_1));
|
|
Set_Msg_Name_Buffer;
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Universal_Real then
|
|
Set_Msg_Str ("type universal real");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Universal_Integer then
|
|
Set_Msg_Str ("type universal integer");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Universal_Fixed then
|
|
Set_Msg_Str ("type universal fixed");
|
|
return;
|
|
end if;
|
|
|
|
-- Special case of anonymous array
|
|
|
|
if Nkind (Error_Msg_Node_1) in N_Entity
|
|
and then Is_Array_Type (Error_Msg_Node_1)
|
|
and then Present (Related_Array_Object (Error_Msg_Node_1))
|
|
then
|
|
Set_Msg_Str ("type of ");
|
|
Set_Msg_Node (Related_Array_Object (Error_Msg_Node_1));
|
|
Set_Msg_Str (" declared");
|
|
Set_Msg_Insertion_Line_Number
|
|
(Sloc (Related_Array_Object (Error_Msg_Node_1)), Flag);
|
|
return;
|
|
end if;
|
|
|
|
-- If we fall through, it is not a special case, so first output
|
|
-- the name of the type, preceded by private for a private type
|
|
|
|
if Is_Private_Type (Error_Msg_Node_1) then
|
|
Set_Msg_Str ("private type ");
|
|
else
|
|
Set_Msg_Str ("type ");
|
|
end if;
|
|
|
|
Ent := Error_Msg_Node_1;
|
|
|
|
if Is_Internal_Name (Chars (Ent)) then
|
|
Unwind_Internal_Type (Ent);
|
|
end if;
|
|
|
|
-- Types in Standard are displayed as "Standard.name"
|
|
|
|
if Sloc (Ent) <= Standard_Location then
|
|
Set_Msg_Quote;
|
|
Set_Msg_Str ("Standard.");
|
|
Set_Msg_Node (Ent);
|
|
Add_Class;
|
|
Set_Msg_Quote;
|
|
|
|
-- Types in other language defined units are displayed as
|
|
-- "package-name.type-name"
|
|
|
|
elsif
|
|
Is_Predefined_File_Name (Unit_File_Name (Get_Source_Unit (Ent)))
|
|
then
|
|
Get_Unqualified_Decoded_Name_String
|
|
(Unit_Name (Get_Source_Unit (Ent)));
|
|
Name_Len := Name_Len - 2;
|
|
Set_Msg_Blank_Conditional;
|
|
Set_Msg_Quote;
|
|
Set_Casing (Mixed_Case);
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Char ('.');
|
|
Set_Casing (Mixed_Case);
|
|
Set_Msg_Node (Ent);
|
|
Add_Class;
|
|
Set_Msg_Quote;
|
|
|
|
-- All other types display as "type name" defined at line xxx
|
|
-- possibly qualified if qualification is requested.
|
|
|
|
else
|
|
Set_Msg_Quote;
|
|
Set_Qualification (Error_Msg_Qual_Level, Ent);
|
|
Set_Msg_Node (Ent);
|
|
Add_Class;
|
|
|
|
-- If we did not print a name (e.g. in the case of an anonymous
|
|
-- subprogram type), there is no name to print, so remove quotes.
|
|
|
|
if Buffer_Ends_With ('"') then
|
|
Buffer_Remove ('"');
|
|
else
|
|
Set_Msg_Quote;
|
|
end if;
|
|
end if;
|
|
|
|
-- If the original type did not come from a predefined file, add the
|
|
-- location where the type was defined.
|
|
|
|
if Sloc (Error_Msg_Node_1) > Standard_Location
|
|
and then
|
|
not Is_Predefined_File_Name
|
|
(Unit_File_Name (Get_Source_Unit (Error_Msg_Node_1)))
|
|
then
|
|
Set_Msg_Str (" defined");
|
|
Set_Msg_Insertion_Line_Number (Sloc (Error_Msg_Node_1), Flag);
|
|
|
|
-- If it did come from a predefined file, deal with the case where
|
|
-- this was a file with a generic instantiation from elsewhere.
|
|
|
|
else
|
|
if Sloc (Error_Msg_Node_1) > Standard_Location then
|
|
declare
|
|
Iloc : constant Source_Ptr :=
|
|
Instantiation_Location (Sloc (Error_Msg_Node_1));
|
|
|
|
begin
|
|
if Iloc /= No_Location
|
|
and then not Suppress_Instance_Location
|
|
then
|
|
Set_Msg_Str (" from instance");
|
|
Set_Msg_Insertion_Line_Number (Iloc, Flag);
|
|
end if;
|
|
end;
|
|
end if;
|
|
end if;
|
|
end Set_Msg_Insertion_Type_Reference;
|
|
|
|
---------------------------------
|
|
-- Set_Msg_Insertion_Unit_Name --
|
|
---------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Unit_Name (Suffix : Boolean := True) is
|
|
begin
|
|
if Error_Msg_Unit_1 = No_Unit_Name then
|
|
null;
|
|
|
|
elsif Error_Msg_Unit_1 = Error_Unit_Name then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("<error>");
|
|
|
|
else
|
|
Get_Unit_Name_String (Error_Msg_Unit_1, Suffix);
|
|
Set_Msg_Blank;
|
|
Set_Msg_Quote;
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Quote;
|
|
end if;
|
|
|
|
-- The following assignment ensures that a second percent insertion
|
|
-- character will correspond to the Error_Msg_Unit_2 parameter. We
|
|
-- suppress possible validity checks in case operating in -gnatVa mode,
|
|
-- and Error_Msg_Unit_2 is not needed and has not been set.
|
|
|
|
declare
|
|
pragma Suppress (Range_Check);
|
|
begin
|
|
Error_Msg_Unit_1 := Error_Msg_Unit_2;
|
|
end;
|
|
end Set_Msg_Insertion_Unit_Name;
|
|
|
|
------------------
|
|
-- Set_Msg_Node --
|
|
------------------
|
|
|
|
procedure Set_Msg_Node (Node : Node_Id) is
|
|
Loc : Source_Ptr;
|
|
Ent : Entity_Id;
|
|
Nam : Name_Id;
|
|
|
|
begin
|
|
case Nkind (Node) is
|
|
when N_Designator =>
|
|
Set_Msg_Node (Name (Node));
|
|
Set_Msg_Char ('.');
|
|
Set_Msg_Node (Identifier (Node));
|
|
return;
|
|
|
|
when N_Defining_Program_Unit_Name =>
|
|
Set_Msg_Node (Name (Node));
|
|
Set_Msg_Char ('.');
|
|
Set_Msg_Node (Defining_Identifier (Node));
|
|
return;
|
|
|
|
when N_Expanded_Name
|
|
| N_Selected_Component
|
|
=>
|
|
Set_Msg_Node (Prefix (Node));
|
|
Set_Msg_Char ('.');
|
|
Set_Msg_Node (Selector_Name (Node));
|
|
return;
|
|
|
|
when others =>
|
|
null;
|
|
end case;
|
|
|
|
-- The only remaining possibilities are identifiers, defining
|
|
-- identifiers, pragmas, and pragma argument associations.
|
|
|
|
if Nkind (Node) = N_Pragma then
|
|
Nam := Pragma_Name (Node);
|
|
Loc := Sloc (Node);
|
|
|
|
-- The other cases have Chars fields
|
|
|
|
-- First deal with internal names, which generally represent something
|
|
-- gone wrong. First attempt: if this is a rewritten node that rewrites
|
|
-- something with a Chars field that is not an internal name, use that.
|
|
|
|
elsif Is_Internal_Name (Chars (Node))
|
|
and then Nkind (Original_Node (Node)) in N_Has_Chars
|
|
and then not Is_Internal_Name (Chars (Original_Node (Node)))
|
|
then
|
|
Nam := Chars (Original_Node (Node));
|
|
Loc := Sloc (Original_Node (Node));
|
|
|
|
-- Another shot for internal names, in the case of internal type names,
|
|
-- we try to find a reasonable representation for the external name.
|
|
|
|
elsif Is_Internal_Name (Chars (Node))
|
|
and then
|
|
((Is_Entity_Name (Node)
|
|
and then Present (Entity (Node))
|
|
and then Is_Type (Entity (Node)))
|
|
or else
|
|
(Nkind (Node) = N_Defining_Identifier and then Is_Type (Node)))
|
|
then
|
|
if Nkind (Node) = N_Identifier then
|
|
Ent := Entity (Node);
|
|
else
|
|
Ent := Node;
|
|
end if;
|
|
|
|
Loc := Sloc (Ent);
|
|
|
|
-- If the type is the designated type of an access_to_subprogram,
|
|
-- then there is no name to provide in the call.
|
|
|
|
if Ekind (Ent) = E_Subprogram_Type then
|
|
return;
|
|
|
|
-- Otherwise, we will be able to find some kind of name to output
|
|
|
|
else
|
|
Unwind_Internal_Type (Ent);
|
|
Nam := Chars (Ent);
|
|
end if;
|
|
|
|
-- If not internal name, or if we could not find a reasonable possible
|
|
-- substitution for the internal name, just use name in Chars field.
|
|
|
|
else
|
|
Nam := Chars (Node);
|
|
Loc := Sloc (Node);
|
|
end if;
|
|
|
|
-- At this stage, the name to output is in Nam
|
|
|
|
Get_Unqualified_Decoded_Name_String (Nam);
|
|
|
|
-- Remove trailing upper case letters from the name (useful for
|
|
-- dealing with some cases of internal names).
|
|
|
|
while Name_Len > 1 and then Name_Buffer (Name_Len) in 'A' .. 'Z' loop
|
|
Name_Len := Name_Len - 1;
|
|
end loop;
|
|
|
|
-- If we have any of the names from standard that start with the
|
|
-- characters "any " (e.g. Any_Type), then kill the message since
|
|
-- almost certainly it is a junk cascaded message.
|
|
|
|
if Name_Len > 4
|
|
and then Name_Buffer (1 .. 4) = "any "
|
|
then
|
|
Kill_Message := True;
|
|
end if;
|
|
|
|
-- If we still have an internal name, kill the message (will only
|
|
-- work if we already had errors!)
|
|
|
|
if Is_Internal_Name then
|
|
Kill_Message := True;
|
|
end if;
|
|
-- Remaining step is to adjust casing and possibly add 'Class
|
|
|
|
Adjust_Name_Case (Global_Name_Buffer, Loc);
|
|
Set_Msg_Name_Buffer;
|
|
Add_Class;
|
|
end Set_Msg_Node;
|
|
|
|
------------------
|
|
-- Set_Msg_Text --
|
|
------------------
|
|
|
|
procedure Set_Msg_Text (Text : String; Flag : Source_Ptr) is
|
|
C : Character; -- Current character
|
|
P : Natural; -- Current index;
|
|
|
|
procedure Skip_Msg_Insertion_Warning (C : Character);
|
|
-- Deal with ? ?? ?x? ?X? ?*? ?$? insertion sequences (and the same
|
|
-- sequences using < instead of ?). The caller has already bumped
|
|
-- the pointer past the initial ? or < and C is set to this initial
|
|
-- character (? or <). This procedure skips past the rest of the
|
|
-- sequence. We do not need to set Msg_Insertion_Char, since this
|
|
-- was already done during the message prescan.
|
|
|
|
--------------------------------
|
|
-- Skip_Msg_Insertion_Warning --
|
|
--------------------------------
|
|
|
|
procedure Skip_Msg_Insertion_Warning (C : Character) is
|
|
begin
|
|
if P <= Text'Last and then Text (P) = C then
|
|
P := P + 1;
|
|
|
|
elsif P + 1 <= Text'Last
|
|
and then (Text (P) in 'a' .. 'z'
|
|
or else
|
|
Text (P) in 'A' .. 'Z'
|
|
or else
|
|
Text (P) = '*'
|
|
or else
|
|
Text (P) = '$')
|
|
and then Text (P + 1) = C
|
|
then
|
|
P := P + 2;
|
|
end if;
|
|
end Skip_Msg_Insertion_Warning;
|
|
|
|
-- Start of processing for Set_Msg_Text
|
|
|
|
begin
|
|
Manual_Quote_Mode := False;
|
|
Msglen := 0;
|
|
Flag_Source := Get_Source_File_Index (Flag);
|
|
|
|
-- Skip info: at start, we have recorded this in Is_Info_Msg, and this
|
|
-- will be used (Info field in error message object) to put back the
|
|
-- string when it is printed. We need to do this, or we get confused
|
|
-- with instantiation continuations.
|
|
|
|
if Text'Length > 6
|
|
and then Text (Text'First .. Text'First + 5) = "info: "
|
|
then
|
|
P := Text'First + 6;
|
|
else
|
|
P := Text'First;
|
|
end if;
|
|
|
|
-- Loop through characters of message
|
|
|
|
while P <= Text'Last loop
|
|
C := Text (P);
|
|
P := P + 1;
|
|
|
|
-- Check for insertion character or sequence
|
|
|
|
case C is
|
|
when '%' =>
|
|
if P <= Text'Last and then Text (P) = '%' then
|
|
P := P + 1;
|
|
Set_Msg_Insertion_Name_Literal;
|
|
else
|
|
Set_Msg_Insertion_Name;
|
|
end if;
|
|
|
|
when '$' =>
|
|
if P <= Text'Last and then Text (P) = '$' then
|
|
P := P + 1;
|
|
Set_Msg_Insertion_Unit_Name (Suffix => False);
|
|
else
|
|
Set_Msg_Insertion_Unit_Name;
|
|
end if;
|
|
|
|
when '{' =>
|
|
Set_Msg_Insertion_File_Name;
|
|
|
|
when '}' =>
|
|
Set_Msg_Insertion_Type_Reference (Flag);
|
|
|
|
when '*' =>
|
|
Set_Msg_Insertion_Reserved_Name;
|
|
|
|
when '&' =>
|
|
Set_Msg_Insertion_Node;
|
|
|
|
when '#' =>
|
|
Set_Msg_Insertion_Line_Number (Error_Msg_Sloc, Flag);
|
|
|
|
when '\' =>
|
|
Continuation := True;
|
|
|
|
if P <= Text'Last and then Text (P) = '\' then
|
|
Continuation_New_Line := True;
|
|
P := P + 1;
|
|
end if;
|
|
|
|
when '@' =>
|
|
Set_Msg_Insertion_Column;
|
|
|
|
when '>' =>
|
|
Set_Msg_Insertion_Run_Time_Name;
|
|
|
|
when '^' =>
|
|
Set_Msg_Insertion_Uint;
|
|
|
|
when '`' =>
|
|
Manual_Quote_Mode := not Manual_Quote_Mode;
|
|
Set_Msg_Char ('"');
|
|
|
|
when '!' =>
|
|
null; -- already dealt with
|
|
|
|
when '?' =>
|
|
Skip_Msg_Insertion_Warning ('?');
|
|
|
|
when '<' =>
|
|
Skip_Msg_Insertion_Warning ('<');
|
|
|
|
when '|' =>
|
|
null; -- already dealt with
|
|
|
|
when ''' =>
|
|
Set_Msg_Char (Text (P));
|
|
P := P + 1;
|
|
|
|
when '~' =>
|
|
Set_Msg_Str (Error_Msg_String (1 .. Error_Msg_Strlen));
|
|
|
|
-- Upper case letter
|
|
|
|
when 'A' .. 'Z' =>
|
|
|
|
-- Start of reserved word if two or more
|
|
|
|
if P <= Text'Last and then Text (P) in 'A' .. 'Z' then
|
|
P := P - 1;
|
|
Set_Msg_Insertion_Reserved_Word (Text, P);
|
|
|
|
-- Single upper case letter is just inserted
|
|
|
|
else
|
|
Set_Msg_Char (C);
|
|
end if;
|
|
|
|
-- '[' (will be/would have been raised at run time)
|
|
|
|
when '[' =>
|
|
if Is_Warning_Msg then
|
|
Set_Msg_Str ("will be raised at run time");
|
|
else
|
|
Set_Msg_Str ("would have been raised at run time");
|
|
end if;
|
|
|
|
-- ']' (may be/might have been raised at run time)
|
|
|
|
when ']' =>
|
|
if Is_Warning_Msg then
|
|
Set_Msg_Str ("may be raised at run time");
|
|
else
|
|
Set_Msg_Str ("might have been raised at run time");
|
|
end if;
|
|
|
|
-- Normal character with no special treatment
|
|
|
|
when others =>
|
|
Set_Msg_Char (C);
|
|
end case;
|
|
end loop;
|
|
end Set_Msg_Text;
|
|
|
|
----------------
|
|
-- Set_Posted --
|
|
----------------
|
|
|
|
procedure Set_Posted (N : Node_Id) is
|
|
P : Node_Id;
|
|
|
|
begin
|
|
if Is_Serious_Error then
|
|
|
|
-- We always set Error_Posted on the node itself
|
|
|
|
Set_Error_Posted (N);
|
|
|
|
-- If it is a subexpression, then set Error_Posted on parents up to
|
|
-- and including the first non-subexpression construct. This helps
|
|
-- avoid cascaded error messages within a single expression.
|
|
|
|
P := N;
|
|
loop
|
|
P := Parent (P);
|
|
exit when No (P);
|
|
Set_Error_Posted (P);
|
|
exit when Nkind (P) not in N_Subexpr;
|
|
end loop;
|
|
|
|
if Nkind_In (P, N_Pragma_Argument_Association,
|
|
N_Component_Association,
|
|
N_Discriminant_Association,
|
|
N_Generic_Association,
|
|
N_Parameter_Association)
|
|
then
|
|
Set_Error_Posted (Parent (P));
|
|
end if;
|
|
|
|
-- A special check, if we just posted an error on an attribute
|
|
-- definition clause, then also set the entity involved as posted.
|
|
-- For example, this stops complaining about the alignment after
|
|
-- complaining about the size, which is likely to be useless.
|
|
|
|
if Nkind (P) = N_Attribute_Definition_Clause then
|
|
if Is_Entity_Name (Name (P)) then
|
|
Set_Error_Posted (Entity (Name (P)));
|
|
end if;
|
|
end if;
|
|
end if;
|
|
end Set_Posted;
|
|
|
|
-----------------------
|
|
-- Set_Qualification --
|
|
-----------------------
|
|
|
|
procedure Set_Qualification (N : Nat; E : Entity_Id) is
|
|
begin
|
|
if N /= 0 and then Scope (E) /= Standard_Standard then
|
|
Set_Qualification (N - 1, Scope (E));
|
|
Set_Msg_Node (Scope (E));
|
|
Set_Msg_Char ('.');
|
|
end if;
|
|
end Set_Qualification;
|
|
|
|
------------------------
|
|
-- Special_Msg_Delete --
|
|
------------------------
|
|
|
|
-- Is it really right to have all this specialized knowledge in errout?
|
|
|
|
function Special_Msg_Delete
|
|
(Msg : String;
|
|
N : Node_Or_Entity_Id;
|
|
E : Node_Or_Entity_Id) return Boolean
|
|
is
|
|
begin
|
|
-- Never delete messages in -gnatdO mode
|
|
|
|
if Debug_Flag_OO then
|
|
return False;
|
|
|
|
-- Processing for "atomic access cannot be guaranteed"
|
|
|
|
elsif Msg = "atomic access to & cannot be guaranteed" then
|
|
|
|
-- When an atomic object refers to a non-atomic type in the same
|
|
-- scope, we implicitly make the type atomic. In the non-error case
|
|
-- this is surely safe (and in fact prevents an error from occurring
|
|
-- if the type is not atomic by default). But if the object cannot be
|
|
-- made atomic, then we introduce an extra junk message by this
|
|
-- manipulation, which we get rid of here.
|
|
|
|
-- We identify this case by the fact that it references a type for
|
|
-- which Is_Atomic is set, but there is no Atomic pragma setting it.
|
|
|
|
if Is_Type (E)
|
|
and then Is_Atomic (E)
|
|
and then No (Get_Rep_Pragma (E, Name_Atomic))
|
|
then
|
|
return True;
|
|
end if;
|
|
|
|
-- Similar processing for "volatile full access cannot be guaranteed"
|
|
|
|
elsif Msg = "volatile full access to & cannot be guaranteed" then
|
|
if Is_Type (E)
|
|
and then Is_Volatile_Full_Access (E)
|
|
and then No (Get_Rep_Pragma (E, Name_Volatile_Full_Access))
|
|
then
|
|
return True;
|
|
end if;
|
|
|
|
-- Processing for "Size too small" messages
|
|
|
|
elsif Msg = "size for& too small, minimum allowed is ^" then
|
|
|
|
-- Suppress "size too small" errors in CodePeer mode, since code may
|
|
-- be analyzed in a different configuration than the one used for
|
|
-- compilation. Even when the configurations match, this message
|
|
-- may be issued on correct code, because pragma Pack is ignored
|
|
-- in CodePeer mode.
|
|
|
|
if CodePeer_Mode then
|
|
return True;
|
|
|
|
-- When a size is wrong for a frozen type there is no explicit size
|
|
-- clause, and other errors have occurred, suppress the message,
|
|
-- since it is likely that this size error is a cascaded result of
|
|
-- other errors. The reason we eliminate unfrozen types is that
|
|
-- messages issued before the freeze type are for sure OK.
|
|
|
|
elsif Is_Frozen (E)
|
|
and then Serious_Errors_Detected > 0
|
|
and then Nkind (N) /= N_Component_Clause
|
|
and then Nkind (Parent (N)) /= N_Component_Clause
|
|
and then
|
|
No (Get_Attribute_Definition_Clause (E, Attribute_Size))
|
|
and then
|
|
No (Get_Attribute_Definition_Clause (E, Attribute_Object_Size))
|
|
and then
|
|
No (Get_Attribute_Definition_Clause (E, Attribute_Value_Size))
|
|
then
|
|
return True;
|
|
end if;
|
|
end if;
|
|
|
|
-- All special tests complete, so go ahead with message
|
|
|
|
return False;
|
|
end Special_Msg_Delete;
|
|
|
|
-----------------
|
|
-- SPARK_Msg_N --
|
|
-----------------
|
|
|
|
procedure SPARK_Msg_N (Msg : String; N : Node_Or_Entity_Id) is
|
|
begin
|
|
if SPARK_Mode /= Off then
|
|
Error_Msg_N (Msg, N);
|
|
end if;
|
|
end SPARK_Msg_N;
|
|
|
|
------------------
|
|
-- SPARK_Msg_NE --
|
|
------------------
|
|
|
|
procedure SPARK_Msg_NE
|
|
(Msg : String;
|
|
N : Node_Or_Entity_Id;
|
|
E : Node_Or_Entity_Id)
|
|
is
|
|
begin
|
|
if SPARK_Mode /= Off then
|
|
Error_Msg_NE (Msg, N, E);
|
|
end if;
|
|
end SPARK_Msg_NE;
|
|
|
|
--------------------------
|
|
-- Unwind_Internal_Type --
|
|
--------------------------
|
|
|
|
procedure Unwind_Internal_Type (Ent : in out Entity_Id) is
|
|
Derived : Boolean := False;
|
|
Mchar : Character;
|
|
Old_Ent : Entity_Id;
|
|
|
|
begin
|
|
-- Undo placement of a quote, since we will put it back later
|
|
|
|
Mchar := Msg_Buffer (Msglen);
|
|
|
|
if Mchar = '"' then
|
|
Msglen := Msglen - 1;
|
|
end if;
|
|
|
|
-- The loop here deals with recursive types, we are trying to find a
|
|
-- related entity that is not an implicit type. Note that the check with
|
|
-- Old_Ent stops us from getting "stuck". Also, we don't output the
|
|
-- "type derived from" message more than once in the case where we climb
|
|
-- up multiple levels.
|
|
|
|
Find : loop
|
|
Old_Ent := Ent;
|
|
|
|
-- Implicit access type, use directly designated type In Ada 2005,
|
|
-- the designated type may be an anonymous access to subprogram, in
|
|
-- which case we can only point to its definition.
|
|
|
|
if Is_Access_Type (Ent) then
|
|
if Ekind (Ent) = E_Access_Subprogram_Type
|
|
or else Ekind (Ent) = E_Anonymous_Access_Subprogram_Type
|
|
or else Is_Access_Protected_Subprogram_Type (Ent)
|
|
then
|
|
Ent := Directly_Designated_Type (Ent);
|
|
|
|
if not Comes_From_Source (Ent) then
|
|
if Buffer_Ends_With ("type ") then
|
|
Buffer_Remove ("type ");
|
|
end if;
|
|
end if;
|
|
|
|
if Ekind (Ent) = E_Function then
|
|
Set_Msg_Str ("access to function ");
|
|
elsif Ekind (Ent) = E_Procedure then
|
|
Set_Msg_Str ("access to procedure ");
|
|
else
|
|
Set_Msg_Str ("access to subprogram");
|
|
end if;
|
|
|
|
exit Find;
|
|
|
|
-- Type is access to object, named or anonymous
|
|
|
|
else
|
|
Set_Msg_Str ("access to ");
|
|
Ent := Directly_Designated_Type (Ent);
|
|
end if;
|
|
|
|
-- Classwide type
|
|
|
|
elsif Is_Class_Wide_Type (Ent) then
|
|
Class_Flag := True;
|
|
Ent := Root_Type (Ent);
|
|
|
|
-- Use base type if this is a subtype
|
|
|
|
elsif Ent /= Base_Type (Ent) then
|
|
Buffer_Remove ("type ");
|
|
|
|
-- Avoid duplication "subtype of subtype of", and also replace
|
|
-- "derived from subtype of" simply by "derived from"
|
|
|
|
if not Buffer_Ends_With ("subtype of ")
|
|
and then not Buffer_Ends_With ("derived from ")
|
|
then
|
|
Set_Msg_Str ("subtype of ");
|
|
end if;
|
|
|
|
Ent := Base_Type (Ent);
|
|
|
|
-- If this is a base type with a first named subtype, use the first
|
|
-- named subtype instead. This is not quite accurate in all cases,
|
|
-- but it makes too much noise to be accurate and add 'Base in all
|
|
-- cases. Note that we only do this is the first named subtype is not
|
|
-- itself an internal name. This avoids the obvious loop (subtype ->
|
|
-- basetype -> subtype) which would otherwise occur).
|
|
|
|
else
|
|
declare
|
|
FST : constant Entity_Id := First_Subtype (Ent);
|
|
|
|
begin
|
|
if not Is_Internal_Name (Chars (FST)) then
|
|
Ent := FST;
|
|
exit Find;
|
|
|
|
-- Otherwise use root type
|
|
|
|
else
|
|
if not Derived then
|
|
Buffer_Remove ("type ");
|
|
|
|
-- Test for "subtype of type derived from" which seems
|
|
-- excessive and is replaced by "type derived from".
|
|
|
|
Buffer_Remove ("subtype of");
|
|
|
|
-- Avoid duplicated "type derived from type derived from"
|
|
|
|
if not Buffer_Ends_With ("type derived from ") then
|
|
Set_Msg_Str ("type derived from ");
|
|
end if;
|
|
|
|
Derived := True;
|
|
end if;
|
|
end if;
|
|
end;
|
|
|
|
Ent := Etype (Ent);
|
|
end if;
|
|
|
|
-- If we are stuck in a loop, get out and settle for the internal
|
|
-- name after all. In this case we set to kill the message if it is
|
|
-- not the first error message (we really try hard not to show the
|
|
-- dirty laundry of the implementation to the poor user).
|
|
|
|
if Ent = Old_Ent then
|
|
Kill_Message := True;
|
|
exit Find;
|
|
end if;
|
|
|
|
-- Get out if we finally found a non-internal name to use
|
|
|
|
exit Find when not Is_Internal_Name (Chars (Ent));
|
|
end loop Find;
|
|
|
|
if Mchar = '"' then
|
|
Set_Msg_Char ('"');
|
|
end if;
|
|
end Unwind_Internal_Type;
|
|
|
|
--------------------
|
|
-- Warn_Insertion --
|
|
--------------------
|
|
|
|
function Warn_Insertion return String is
|
|
begin
|
|
case Warning_Msg_Char is
|
|
when '?' =>
|
|
return "??";
|
|
|
|
when 'a' .. 'z' | 'A' .. 'Z' | '*' | '$' =>
|
|
return '?' & Warning_Msg_Char & '?';
|
|
|
|
when ' ' =>
|
|
return "?";
|
|
|
|
when others =>
|
|
raise Program_Error;
|
|
end case;
|
|
end Warn_Insertion;
|
|
|
|
end Errout;
|